Question

What is 15 divided by 266 with a remainder of 11?

Answer 1

266-11=255 is the number that doesn't have a remainder when multiplied to 15 and you answer.

255/15=17

Therefore 17 is the number you get when 266 is divided by 15 with a remainder of 11.

Unless I interpreted your question incorrectly...

Answer 2

Long Division time!
____
15 / 266

__1_
15 / 266
-15
__________
116

__17
15 / 116

__17
15 / 116
-105
____________
11

Answer is 17, with remainder of 11.