Let's divide 90254970 by 648
Our goal is to divide 90254970 by 648.

On to step 1:
When dividing 9 by 648, we get 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Take the next digit (0) from the dividend and append it to 9, then repeat: 90 / 648

On to step 2:
If we divide 90 by 648, we get 0 and a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 90 to get 90.
Bring next digit (2) of the dividend behind the 90 and repeat the process: 902 / 648

Moving on to step 3:
If we divide 902 by 648, we get 1 and a remainder of 254.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 648 from 902 and we're left with 254.
Grab the next digit (5) from the dividend, add it to 254, then carry on: 2545 / 648

Advancing to step 4:
When dividing 2545 by 648, we get 3 with a remainder of 601.
Write down 3 as next digit of the result. 
Result so far: 13.0
Subtracting 1944 from 2545 leaves us with 601.
Take the next digit (4) from the dividend and append it to 601, then repeat: 6014 / 648

Advancing to step 5:
648 goes into 6014 9 times with a remainder of 182.
The next digit of our result is 9. 
Result so far: 139.0
Subtracting 5832 from 6014 leaves us with 182.
Grab the next digit (9) from the dividend, add it to 182, then carry on: 1829 / 648

Advancing to step 6:
1829 divided by 648 is 2 with a remainder of 533.
The number 2 becomes the next digit in our result. 
Result so far: 1392.0
If we take 1296 away from 1829, we end up with 533.
Bring next digit (7) of the dividend behind the 533 and repeat the process: 5337 / 648

Let's proceed to step 7:
When dividing 5337 by 648, we get 8 with a remainder of 153.
Write down 8 as next digit of the result. 
Result so far: 13928.0
If we subtract 5184 from 5337, we get 153.
Take the next digit (0) from the dividend and append it to 153, then repeat: 1530 / 648

Let's proceed to step 8:
If we divide 1530 by 648, we get 2 and a remainder of 234.
Put 2 as the next digit of the answer. 
Result so far: 139282.0
If we take 1296 away from 1530, we end up with 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

Advancing to step 9:
648 goes into 2340 3 times with a remainder of 396.
Put 3 as the next digit of the answer. 
Result so far: 139282.3
The remainder is 396 after subtracting 1944 from 2340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

Let's proceed to step 10:
3960 divided by 648 is 6 with a remainder of 72.
Record the quotient 6 as the next digit in the result. 
Result so far: 139282.36
If we take 3888 away from 3960, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 11:
When dividing 720 by 648, we get 1 with a remainder of 72.
Record the quotient 1 as the next digit in the result. 
Result so far: 139282.361
The remainder is 72 after subtracting 648 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 12:
If we divide 720 by 648, we get 1 and a remainder of 72.
Write down 1 as next digit of the result. 
Result so far: 139282.3611
If we take 648 away from 720, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Our division results in 139282.3611 with a remaining 0.00072.