Yes, you need to reuse the input conserving its format.

The description gives an exact algorithm to calculate the output from the input, what's the problem, concretely?

You need to return the answer, not print it.

congrats, you're welcome, happy coding

consider this feedback using console.log(n = ${n}); at the beginning of your code:

n = 725635
Expected: 1, instead got: 10

• the input passed to your function was 725635
• your function returned 10
• the correct expected value for this test is 1

10 and 11 are not inputs, they're your outputs, and other numbers are expected outputs. The part of while (...) { do some actions; return sum } will always exit after 1 iteration, so that's probably not what you want.

Same here i ;)

yep, try to simplyfy it this doesnt works like GooglePay where you already have 25 and then if u get 100 more u could easily add it to main balance and give 75 back, having 50 rs as balance. these are real curruny notes thats why it tends to confuse us!