76643 ÷ 5 = 15328 R3
Let's divide 76643 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 (6) of the dividend behind the 2 and repeat the process: 26 / 5

Step 2:
5 goes into 26 5 times with a remainder of 1.
Write down 5 as next digit of of the result. 
Result so far: 15
Subtract 25 from 26 to get 1.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 5

Step 3:
5 goes into 16 3 times with a remainder of 1.
Write down 3 as next digit of of the result. 
Result so far: 153
Subtract 15 from 16 to get 1.
Bring next digit (4) of the dividend behind the 1 and repeat the process: 14 / 5

Step 4:
5 goes into 14 2 times with a remainder of 4.
Write down 2 as next digit of of the result. 
Result so far: 1532
Subtract 10 from 14 to get 4.
Bring next digit (3) of the dividend behind the 4 and repeat the process: 43 / 5

Step 5:
5 goes into 43 8 times with a remainder of 3.
Write down 8 as next digit of of the result. 
Result so far: 15328
Subtract 40 from 43 to get 3.

The final result is 15328 with a remainder of 3.