Как сделать сложный калькулятор в ZeroBlock в Tilda

<style>
.sendform {cursor:pointer}
.mainform .hide-input-mode {
    opacity: 0;
    height: 0;
    max-height: 0;
    min-height: 0;
    pointer-events: none;
    overflow: hidden;
    position: absolute;
    z-index: -10;
}
</style>

<script>
$( document ).ready(function() {
let formID='';
//При клике на нашу кнопку
$('.sendform').click(function(e) {e.preventDefault();
    formID = '#' + $(this).closest('.t-rec').attr('id');
    let fullinput=true;   
    $('.t-input-group').removeClass('js-error-control-box');
    $(formID).find('.js-tilda-rule[data-tilda-req="1"]').each(function() {
        if($(this).val()==''){$(this).closest('form').find('.t-submit').click(); fullinput=false; return false;};
    }); 
    if(fullinput){
    $(formID).find('input[type="radio"][data-tilda-req="1"].js-tilda-rule').closest('.t-input-block').each(function() {
    if(!$(this).find('input[type="radio"]').is(':checked')){$(this).closest('form').find('.t-submit').click();fullinput=false; return false;  
    };});};
    if(fullinput){
    $(formID).find('input[type="checkbox"][data-tilda-req="1"].js-tilda-rule').each(function() {
    if (!$(this).is(':checked')){ $(this).closest('form').find('.t-submit').click(); fullinput=false; return false;};
    });};
    
    if(fullinput){
        $(formID).find('.slaveform').each(function(){
            $(this).find('.t-input-group').each(function(){
                $(this).addClass('hide-input-mode');
                $(this).clone().appendTo(formID+" .mainform .t-form__inputsbox");   
                if( $(this).hasClass('t-input-group_sb') ){
                    let selectName = $(this).find('select').attr('name');
                    $(formID+' .mainform select[name="'+selectName+'"]').val( $(formID+' .slaveform select[name="'+selectName+'"]').val() );
                };
            });
        });
    //Отправляем данные основной формы       
    setTimeout(function(){  $(formID).find('.mainform .t-submit').click() }, 500);
    };
});
$(formID+' .mainform').delegate(".t-submit", "click", function(){
    setTimeout(function(){
        if ( $(formID+' .mainform .t-form').hasClass("js-send-form-success")){
            $(formID+' .mainform .hide-input-mode').remove();
            //$(formID+' .slaveform').find('input').val('');
            //$(formID+' .slaveform').find('textarea').val(' ');
            $(formID+' .slaveform select option:first').prop('selected', true);
            $(formID+' input').prop('checked', false);
            let recID = formID.replace(/[^0-9]/g, '');t396_init(recID);
        };
    }, 1000);
});    
$(document).on("keydown", ".t-form", function(event) {return event.key != "Enter";});
});
</script>

<style>
    .t-bgimg.t-img-select__indicator {
    box-shadow: none !important;
}
    .t-img-select__text.t-text.t-text_xs {
    font-size: 12px !important;
    text-align: center;
}

.tn-atom .t-form__errorbox-wrapper, .tn-form__errorbox-popup {
    bottom: 50%;
    left: calc(50% - 373px/2);
    right: inherit;
}
.t-img-select__control {
    width: calc(25% - 10px) !important;
 
}
</style>