40051 ÷ 7 = 5721 R4
Alright, let's work through the division of 40051 by 7 step by step.

Step 1:
7 goes into 4 0 times with a remainder of 4.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 4 to get 4.
Bring next digit (0) of the dividend behind the 4 and repeat the process: 40 / 7

Step 2:
7 goes into 40 5 times with a remainder of 5.
Write down 5 as next digit of of the result. 
Result so far: 5
Subtract 35 from 40 to get 5.
Bring next digit (0) of the dividend behind the 5 and repeat the process: 50 / 7

Step 3:
7 goes into 50 7 times with a remainder of 1.
Write down 7 as next digit of of the result. 
Result so far: 57
Subtract 49 from 50 to get 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 7

Step 4:
7 goes into 15 2 times with a remainder of 1.
Write down 2 as next digit of of the result. 
Result so far: 572
Subtract 14 from 15 to get 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 7

Step 5:
7 goes into 11 1 times with a remainder of 4.
Write down 1 as next digit of of the result. 
Result so far: 5721
Subtract 7 from 11 to get 4.

The final result is 5721 with a remainder of 4.