71123 ÷ 7 = 10160 R3
Alright, let's work through the division of 71123 by 7 step by step.

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

Step 2:
7 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of of the result. 
Result so far: 10
Subtract 0 from 1 to get 1.
Bring next digit (1) of the dividend behind the 1 and repeat the process: 11 / 7

Step 3:
7 goes into 11 1 times with a remainder of 4.
Write down 1 as next digit of of the result. 
Result so far: 101
Subtract 7 from 11 to get 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 7

Step 4:
7 goes into 42 6 times with a remainder of 0.
Write down 6 as next digit of of the result. 
Result so far: 1016
Subtract 42 from 42 to get 0.
Bring next digit (3) of the dividend behind the 0 and repeat the process: 3 / 7

Step 5:
7 goes into 3 0 times with a remainder of 3.
Write down 0 as next digit of of the result. 
Result so far: 10160
Subtract 0 from 3 to get 3.

The final result is 10160 with a remainder of 3.