We divide 78986471 by 721
We want to figure out the number of times 78986471 can be divided by 721.

Step 1:
If we divide 7 by 721, we get 0 and a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 721

Step 2:
When dividing 78 by 721, we get 0 with a remainder of 78.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 78, we end up with 78.
Take the next digit (9) from the dividend and append it to 78, then repeat: 789 / 721

Let's proceed to step 3:
721 can be fit into 789 1 times, resulting in a remainder of 68.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 721 from 789, we get 68.
Take the next digit (8) from the dividend and append it to 68, then repeat: 688 / 721

Step 4:
The number 721 fits into 688 0 times, leaving a remainder of 688.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
The remainder is 688 after subtracting 0 from 688.
Append the next digit (6) from the dividend to 688 and continue with: 6886 / 721

Step 5:
6886 divided by 721 is 9 with a remainder of 397.
Record the quotient 9 as the next digit in the result. 
Result so far: 109.0
The remainder is 397 after subtracting 6489 from 6886.
Append the next digit (4) from the dividend to 397 and continue with: 3974 / 721

On to step 6:
If we divide 3974 by 721, we get 5 and a remainder of 369.
The number 5 becomes the next digit in our result. 
Result so far: 1095.0
The remainder is 369 after subtracting 3605 from 3974.
Append the next digit (7) from the dividend to 369 and continue with: 3697 / 721

On to step 7:
The number 721 fits into 3697 5 times, leaving a remainder of 92.
Record the quotient 5 as the next digit in the result. 
Result so far: 10955.0
If we take 3605 away from 3697, we end up with 92.
Take the next digit (1) from the dividend and append it to 92, then repeat: 921 / 721

Let's proceed to step 8:
721 can be fit into 921 1 times, resulting in a remainder of 200.
The next digit of our result is 1. 
Result so far: 109551.0
Subtract 721 from 921 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Let's proceed to step 9:
When dividing 2000 by 721, we get 2 with a remainder of 558.
The number 2 becomes the next digit in our result. 
Result so far: 109551.2
If we subtract 1442 from 2000, we get 558.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5580, and continue the process.

Let's proceed to step 10:
721 can be fit into 5580 7 times, resulting in a remainder of 533.
Write down 7 as next digit of the result. 
Result so far: 109551.27
Subtracting 5047 from 5580 leaves us with 533.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5330, and continue the process.

Let's proceed to step 11:
5330 divided by 721 is 7 with a remainder of 283.
Put 7 as the next digit of the answer. 
Result so far: 109551.277
Subtract 5047 from 5330 to get 283.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2830, and continue the process.

After the division, we end up with 109551.277 and a remainder of 0.0283.