79742 ÷ 2 = 39871 R0
Let's divide 79742 by 2.

Step 1:
2 goes into 7 3 times with a remainder of 1.
Write down 3 as next digit of of the result. 
Result so far: 3
Subtract 6 from 7 to get 1.
Bring next digit (9) of the dividend behind the 1 and repeat the process: 19 / 2

Step 2:
2 goes into 19 9 times with a remainder of 1.
Write down 9 as next digit of of the result. 
Result so far: 39
Subtract 18 from 19 to get 1.
Bring next digit (7) of the dividend behind the 1 and repeat the process: 17 / 2

Step 3:
2 goes into 17 8 times with a remainder of 1.
Write down 8 as next digit of of the result. 
Result so far: 398
Subtract 16 from 17 to get 1.
Bring next digit (4) of the dividend behind the 1 and repeat the process: 14 / 2

Step 4:
2 goes into 14 7 times with a remainder of 0.
Write down 7 as next digit of of the result. 
Result so far: 3987
Subtract 14 from 14 to get 0.
Bring next digit (2) of the dividend behind the 0 and repeat the process: 2 / 2

Step 5:
2 goes into 2 1 times with a remainder of 0.
Write down 1 as next digit of of the result. 
Result so far: 39871
Subtract 2 from 2 to get 0.

The final result is 39871 with a remainder of 0.