Denominator is incorrect when radio buttons are not Yes/No type

[lachko]

When we have 2 questions and each has options o 1,2,3 as radio buttons the total score is 6 (3 points for each question max) It looks like currently the denominator is only counting how many questions but not considering value: https://github.com/Tangerine-Community/tangy-form/blob/fa42817fa7cc5022444d3114301590f00011d5ff/tangy-form-item.js#L815
 
For example, for response:
if the user got 3 points for each question their score input (_score is 6) but denominator is wrongly put as 2 resulting in a percentage of 300