What is the obligation when a debtor admits owing an amount stating 'from one to ten' and intends to include all whole numbers between and including the endpoints?

Primary text

If the debtor clarifies that saying 'from one to ten' meant the sum of all numbers including one and extending to ten, then fifty-five dirhams are obligatory. The calculation method involves adding the first number (one) to the last number (ten) to get eleven, and then multiplying this sum by half of the total count of numbers (which is ten divided by two, equaling five), resulting in fifty-five.