Hi there!
First question:
[tex]24800 \div 31 = 800[/tex]
Second question:
We're dealing with a quotient, which means we must divide the numbers.
[tex]4000 \div 15 = 266 \frac{2}{3} = 266.66...[/tex]
Hence, the rounded answer is [tex]266.67[/tex]
~ Hope this helps you!