21891788 divided by 153 
We want to figure out the number of times 21891788 can be divided by 153.

Moving on to step 1:
153 can be fit into 2 0 times, resulting in a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 153

Advancing to step 2:
153 can be fit into 21 0 times, resulting in a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Take the next digit (8) from the dividend and append it to 21, then repeat: 218 / 153

On to step 3:
If we divide 218 by 153, we get 1 and a remainder of 65.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 65 after subtracting 153 from 218.
Grab the next digit (9) from the dividend, add it to 65, then carry on: 659 / 153

Step 4:
153 goes into 659 4 times with a remainder of 47.
Put 4 as the next digit of the answer. 
Result so far: 14.0
If we subtract 612 from 659, we get 47.
Include the next digit (1) from the dividend after 47, then repeat: 471 / 153

Moving on to step 5:
471 divided by 153 is 3 with a remainder of 12.
Use 3 as the next digit of our solution. 
Result so far: 143.0
If we take 459 away from 471, we end up with 12.
Fetch the next digit (7) from the dividend, attach it to 12 and continue: 127 / 153

Step 6:
The number 153 fits into 127 0 times, leaving a remainder of 127.
Write down 0 as next digit of the result. 
Result so far: 1430.0
Deduct 0 from 127 and we're left with 127.
Append the next digit (8) from the dividend to 127 and continue with: 1278 / 153

Step 7:
153 can be fit into 1278 8 times, resulting in a remainder of 54.
Record the quotient 8 as the next digit in the result. 
Result so far: 14308.0
If we take 1224 away from 1278, we end up with 54.
Grab the next digit (8) from the dividend, add it to 54, then carry on: 548 / 153

Going ahead to step 8:
If we divide 548 by 153, we get 3 and a remainder of 89.
Write down 3 as next digit of the result. 
Result so far: 143083.0
The remainder is 89 after subtracting 459 from 548.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Step 9:
153 can be fit into 890 5 times, resulting in a remainder of 125.
Use 5 as the next digit of our solution. 
Result so far: 143083.5
If we subtract 765 from 890, we get 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Step 10:
When dividing 1250 by 153, we get 8 with a remainder of 26.
Put 8 as the next digit of the answer. 
Result so far: 143083.58
If we subtract 1224 from 1250, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 11:
153 goes into 260 1 times with a remainder of 107.
Use 1 as the next digit of our solution. 
Result so far: 143083.581
If we take 153 away from 260, we end up with 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

Advancing to step 12:
1070 divided by 153 is 6 with a remainder of 152.
Put 6 as the next digit of the answer. 
Result so far: 143083.5816
If we take 918 away from 1070, we end up with 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Advancing to step 13:
1520 divided by 153 is 9 with a remainder of 143.
Write down 9 as next digit of the result. 
Result so far: 143083.58169
Deduct 1377 from 1520 and we're left with 143.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1430, and continue the process.

On to step 14:
1430 divided by 153 is 9 with a remainder of 53.
Use 9 as the next digit of our solution. 
Result so far: 143083.581699
The remainder is 53 after subtracting 1377 from 1430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

The final result is 143083.581699 with a remainder of 5.3e-06.