79950 ÷ 4 = 19987 R2
We're going to perform division on 79950 with 4 as the divisor.

Step 1:
4 goes into 7 1 times with a remainder of 3.
Write down 1 as next digit of of the result. 
Result so far: 1
Subtract 4 from 7 to get 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 4

Step 2:
4 goes into 39 9 times with a remainder of 3.
Write down 9 as next digit of of the result. 
Result so far: 19
Subtract 36 from 39 to get 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 4

Step 3:
4 goes into 39 9 times with a remainder of 3.
Write down 9 as next digit of of the result. 
Result so far: 199
Subtract 36 from 39 to get 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 4

Step 4:
4 goes into 35 8 times with a remainder of 3.
Write down 8 as next digit of of the result. 
Result so far: 1998
Subtract 32 from 35 to get 3.
Bring next digit (0) of the dividend behind the 3 and repeat the process: 30 / 4

Step 5:
4 goes into 30 7 times with a remainder of 2.
Write down 7 as next digit of of the result. 
Result so far: 19987
Subtract 28 from 30 to get 2.

The final result is 19987 with a remainder of 2.