We look at the division of 6489901 by 721 
Our goal is to divide 6489901 by 721.

Advancing to step 1:
721 goes into 6 0 times with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 721

On to step 2:
When dividing 64 by 721, we get 0 with a remainder of 64.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 64 after subtracting 0 from 64.
Include the next digit (8) from the dividend after 64, then repeat: 648 / 721

Going ahead to step 3:
721 goes into 648 0 times with a remainder of 648.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 648 and we're left with 648.
Fetch the next digit (9) from the dividend, attach it to 648 and continue: 6489 / 721

Advancing to step 4:
6489 divided by 721 is 9 with a remainder of 0.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
If we subtract 6489 from 6489, we get 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 721

Let's proceed to step 5:
9 divided by 721 is 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 90.0
The remainder is 9 after subtracting 0 from 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 721

Moving on to step 6:
90 divided by 721 is 0 with a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 900.0
If we take 0 away from 90, we end up with 90.
Include the next digit (1) from the dividend after 90, then repeat: 901 / 721

Moving on to step 7:
721 goes into 901 1 times with a remainder of 180.
The number 1 becomes the next digit in our result. 
Result so far: 9001.0
Subtracting 721 from 901 leaves us with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Advancing to step 8:
1800 divided by 721 is 2 with a remainder of 358.
Write down 2 as next digit of the result. 
Result so far: 9001.2
If we take 1442 away from 1800, we end up with 358.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3580, and continue the process.

Advancing to step 9:
If we divide 3580 by 721, we get 4 and a remainder of 696.
Put 4 as the next digit of the answer. 
Result so far: 9001.24
Deduct 2884 from 3580 and we're left with 696.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6960, and continue the process.

Going ahead to step 10:
If we divide 6960 by 721, we get 9 and a remainder of 471.
Put 9 as the next digit of the answer. 
Result so far: 9001.249
If we subtract 6489 from 6960, we get 471.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4710, and continue the process.

Advancing to step 11:
721 goes into 4710 6 times with a remainder of 384.
Write down 6 as next digit of the result. 
Result so far: 9001.2496
Subtract 4326 from 4710 to get 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

Advancing to step 12:
The number 721 fits into 3840 5 times, leaving a remainder of 235.
Write down 5 as next digit of the result. 
Result so far: 9001.24965
Deduct 3605 from 3840 and we're left with 235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Let's proceed to step 13:
When dividing 2350 by 721, we get 3 with a remainder of 187.
Write down 3 as next digit of the result. 
Result so far: 9001.249653
Subtract 2163 from 2350 to get 187.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1870, and continue the process.

Let's proceed to step 14:
1870 divided by 721 is 2 with a remainder of 428.
Record the quotient 2 as the next digit in the result. 
Result so far: 9001.2496532
Subtracting 1442 from 1870 leaves us with 428.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4280, and continue the process.

Moving on to step 15:
4280 divided by 721 is 5 with a remainder of 675.
The number 5 becomes the next digit in our result. 
Result so far: 9001.24965325
Subtracting 3605 from 4280 leaves us with 675.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6750, and continue the process.

After the division, we end up with 9001.24965325 and a remainder of 6.75e-07.