77639 ÷ 5 = 15527 R4
Let's divide 77639 by 5.

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 (7) of the dividend behind the 2 and repeat the process: 27 / 5

Step 2:
5 goes into 27 5 times with a remainder of 2.
Write down 5 as next digit of of the result. 
Result so far: 15
Subtract 25 from 27 to get 2.
Bring next digit (6) of the dividend behind the 2 and repeat the process: 26 / 5

Step 3:
5 goes into 26 5 times with a remainder of 1.
Write down 5 as next digit of of the result. 
Result so far: 155
Subtract 25 from 26 to get 1.
Bring next digit (3) of the dividend behind the 1 and repeat the process: 13 / 5

Step 4:
5 goes into 13 2 times with a remainder of 3.
Write down 2 as next digit of of the result. 
Result so far: 1552
Subtract 10 from 13 to get 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 5

Step 5:
5 goes into 39 7 times with a remainder of 4.
Write down 7 as next digit of of the result. 
Result so far: 15527
Subtract 35 from 39 to get 4.

The final result is 15527 with a remainder of 4.