It looks like you want to calculate or understand something related to a sum that fetched a total simple interest of Rs. 401. To help you better, could you please provide more details? For example:

• The principal amount (the initial sum of money)
• The rate of interest per annum
• The time period for which the interest was calculated

With these details, I can help you find the missing value or explain how simple interest works. Here's a quick refresher on the formula for simple interest: Simple Interest (SI) = (Principal × Rate × Time) / 100 Feel free to share the details!