We divide 21799838 by 648
We want to figure out the number of times 21799838 can be divided by 648.

Advancing to step 1:
The number 648 fits into 2 0 times, leaving a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 648

Let's proceed to step 2:
21 divided by 648 is 0 with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Take the next digit (7) from the dividend and append it to 21, then repeat: 217 / 648

On to step 3:
648 can be fit into 217 0 times, resulting in a remainder of 217.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 217 leaves us with 217.
Grab the next digit (9) from the dividend, add it to 217, then carry on: 2179 / 648

On to step 4:
2179 divided by 648 is 3 with a remainder of 235.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
The remainder is 235 after subtracting 1944 from 2179.
Bring next digit (9) of the dividend behind the 235 and repeat the process: 2359 / 648

Going ahead to step 5:
648 goes into 2359 3 times with a remainder of 415.
The number 3 becomes the next digit in our result. 
Result so far: 33.0
If we take 1944 away from 2359, we end up with 415.
Fetch the next digit (8) from the dividend, attach it to 415 and continue: 4158 / 648

Advancing to step 6:
648 can be fit into 4158 6 times, resulting in a remainder of 270.
The next digit of our result is 6. 
Result so far: 336.0
Deduct 3888 from 4158 and we're left with 270.
Fetch the next digit (3) from the dividend, attach it to 270 and continue: 2703 / 648

Advancing to step 7:
When dividing 2703 by 648, we get 4 with a remainder of 111.
The next digit of our result is 4. 
Result so far: 3364.0
Subtract 2592 from 2703 to get 111.
Append the next digit (8) from the dividend to 111 and continue with: 1118 / 648

Moving on to step 8:
If we divide 1118 by 648, we get 1 and a remainder of 470.
Put 1 as the next digit of the answer. 
Result so far: 33641.0
Deduct 648 from 1118 and we're left with 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

Going ahead to step 9:
When dividing 4700 by 648, we get 7 with a remainder of 164.
Record the quotient 7 as the next digit in the result. 
Result so far: 33641.7
If we subtract 4536 from 4700, we get 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Advancing to step 10:
648 can be fit into 1640 2 times, resulting in a remainder of 344.
Write down 2 as next digit of the result. 
Result so far: 33641.72
Subtract 1296 from 1640 to get 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

Moving on to step 11:
3440 divided by 648 is 5 with a remainder of 200.
The number 5 becomes the next digit in our result. 
Result so far: 33641.725
The remainder is 200 after subtracting 3240 from 3440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Advancing to step 12:
648 goes into 2000 3 times with a remainder of 56.
Write down 3 as next digit of the result. 
Result so far: 33641.7253
If we subtract 1944 from 2000, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 13:
If we divide 560 by 648, we get 0 and a remainder of 560.
Write down 0 as next digit of the result. 
Result so far: 33641.7253
If we take 0 away from 560, we end up with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Advancing to step 14:
If we divide 5600 by 648, we get 8 and a remainder of 416.
Record the quotient 8 as the next digit in the result. 
Result so far: 33641.725308
The remainder is 416 after subtracting 5184 from 5600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4160, and continue the process.

Moving on to step 15:
When dividing 4160 by 648, we get 6 with a remainder of 272.
The next digit of our result is 6. 
Result so far: 33641.7253086
If we subtract 3888 from 4160, we get 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

Let's proceed to step 16:
The number 648 fits into 2720 4 times, leaving a remainder of 128.
The number 4 becomes the next digit in our result. 
Result so far: 33641.72530864
Subtracting 2592 from 2720 leaves us with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

After the division, we end up with 33641.72530864 and a remainder of 1.28e-07.