# Leetcode 1716 - Calculate Money in Leetcode Bank

`Note:`

- Use math

`Question:`

Hercy wants to save money for his first car. He puts money in the Leetcode bank every day.

He starts by putting in $`1`

on `Monday`

, the first day. Every day from Tuesday to Sunday, he will put in `$1 more`

than the day before. On every `subsequent Monday`

, he will put in `$1 more than`

the previous Monday.

Given n, return the `total amount`

of money he will have in the Leetcode bank at the end of the nth day.

`Example:`

1 | Input: n = 20 |

`Code:`

1 | /** |