Let's divide 768131 by 21
Our goal is to divide 768131 by 21.

Step 1:
The number 21 fits into 7 0 times, leaving a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (6) from the dividend to 7 and continue with: 76 / 21

Moving on to step 2:
When dividing 76 by 21, we get 3 with a remainder of 13.
Write down 3 as next digit of the result. 
Result so far: 3.0
If we take 63 away from 76, we end up with 13.
Grab the next digit (8) from the dividend, add it to 13, then carry on: 138 / 21

Let's proceed to step 3:
The number 21 fits into 138 6 times, leaving a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 36.0
The remainder is 12 after subtracting 126 from 138.
Append the next digit (1) from the dividend to 12 and continue with: 121 / 21

Moving on to step 4:
121 divided by 21 is 5 with a remainder of 16.
The next digit of our result is 5. 
Result so far: 365.0
Subtract 105 from 121 to get 16.
Take the next digit (3) from the dividend and append it to 16, then repeat: 163 / 21

Advancing to step 5:
The number 21 fits into 163 7 times, leaving a remainder of 16.
Use 7 as the next digit of our solution. 
Result so far: 3657.0
Deduct 147 from 163 and we're left with 16.
Include the next digit (1) from the dividend after 16, then repeat: 161 / 21

Going ahead to step 6:
When dividing 161 by 21, we get 7 with a remainder of 14.
Record the quotient 7 as the next digit in the result. 
Result so far: 36577.0
Subtract 147 from 161 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 7:
If we divide 140 by 21, we get 6 and a remainder of 14.
Use 6 as the next digit of our solution. 
Result so far: 36577.6
Subtract 126 from 140 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

On to step 8:
The number 21 fits into 140 6 times, leaving a remainder of 14.
Write down 6 as next digit of the result. 
Result so far: 36577.66
If we take 126 away from 140, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

In conclusion, the division gives 36577.66 with a balance of 0.014.