Simple JS Calculation From MB field Values

Thank you Long! I wanted to share my solution.

my form has 3 fields that receive user inputs, and they are part of a group so they can be cloned:

Group => group_locations
Field 1 => shift_hours
Field 2 => total_number_guards
Field 3 => proposed_rate

I added a MB button field to run the calculation

And display the result in a separate field:

Total Price => proposed_cost

jQuery(document).on('click', 'button[id^="pricing_group_locations_button_"]', function() {
  console.log('here');
  let wrapper = jQuery(this).closest('.rwmb-group-clone');
  let shift_hours = wrapper.find('input[name<em>="shift_hours"]').val();
  let guards = wrapper.find('input[name</em>="total_number_guards"]').val();
  let proposed_rate = wrapper.find('input[name<em>="proposed_rate"]').val();
  wrapper.find('input[name</em>="proposed_cost"]').val(shift_hours * guards * proposed_rate);

let sum = 0;
  jQuery('input[name*="proposed_cost"]').each(function(index, item){
    console.log(item)
    sum += parseFloat(item.value)
  })

jQuery('#pricing_total_pricing').val(sum);
});