73866 ÷ 5 = 14773 R1
We're going to perform division on 73866 with 5 as the divisor.

Step 1:
5 goes into 7 1 times with a remainder of 2.
Write down 1 as next digit of of the result. 
Result so far: 1
Subtract 5 from 7 to get 2.
Bring next digit (3) of the dividend behind the 2 and repeat the process: 23 / 5

Step 2:
5 goes into 23 4 times with a remainder of 3.
Write down 4 as next digit of of the result. 
Result so far: 14
Subtract 20 from 23 to get 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 5

Step 3:
5 goes into 38 7 times with a remainder of 3.
Write down 7 as next digit of of the result. 
Result so far: 147
Subtract 35 from 38 to get 3.
Bring next digit (6) of the dividend behind the 3 and repeat the process: 36 / 5

Step 4:
5 goes into 36 7 times with a remainder of 1.
Write down 7 as next digit of of the result. 
Result so far: 1477
Subtract 35 from 36 to get 1.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 5

Step 5:
5 goes into 16 3 times with a remainder of 1.
Write down 3 as next digit of of the result. 
Result so far: 14773
Subtract 15 from 16 to get 1.

The final result is 14773 with a remainder of 1.