We're dividing 21269821 by 155 
We want to figure out the number of times 21269821 can be divided by 155.

Advancing to step 1:
155 can be fit into 2 0 times, resulting in a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 155

Moving on to step 2:
155 can be fit into 21 0 times, resulting in a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Bring next digit (2) of the dividend behind the 21 and repeat the process: 212 / 155

Going ahead to step 3:
212 divided by 155 is 1 with a remainder of 57.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 155 away from 212, we end up with 57.
Append the next digit (6) from the dividend to 57 and continue with: 576 / 155

Step 4:
155 goes into 576 3 times with a remainder of 111.
Put 3 as the next digit of the answer. 
Result so far: 13.0
If we take 465 away from 576, we end up with 111.
Grab the next digit (9) from the dividend, add it to 111, then carry on: 1119 / 155

Moving on to step 5:
155 goes into 1119 7 times with a remainder of 34.
Use 7 as the next digit of our solution. 
Result so far: 137.0
If we subtract 1085 from 1119, we get 34.
Grab the next digit (8) from the dividend, add it to 34, then carry on: 348 / 155

Let's proceed to step 6:
348 divided by 155 is 2 with a remainder of 38.
Write down 2 as next digit of the result. 
Result so far: 1372.0
Subtracting 310 from 348 leaves us with 38.
Include the next digit (2) from the dividend after 38, then repeat: 382 / 155

Step 7:
155 can be fit into 382 2 times, resulting in a remainder of 72.
The number 2 becomes the next digit in our result. 
Result so far: 13722.0
If we subtract 310 from 382, we get 72.
Bring next digit (1) of the dividend behind the 72 and repeat the process: 721 / 155

Advancing to step 8:
The number 155 fits into 721 4 times, leaving a remainder of 101.
The number 4 becomes the next digit in our result. 
Result so far: 137224.0
Deduct 620 from 721 and we're left with 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Let's proceed to step 9:
155 can be fit into 1010 6 times, resulting in a remainder of 80.
Put 6 as the next digit of the answer. 
Result so far: 137224.6
Deduct 930 from 1010 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 10:
The number 155 fits into 800 5 times, leaving a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 137224.65
Subtract 775 from 800 to get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 11:
155 can be fit into 250 1 times, resulting in a remainder of 95.
The next digit of our result is 1. 
Result so far: 137224.651
Deduct 155 from 250 and we're left with 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

On to step 12:
The number 155 fits into 950 6 times, leaving a remainder of 20.
Record the quotient 6 as the next digit in the result. 
Result so far: 137224.6516
The remainder is 20 after subtracting 930 from 950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 13:
When dividing 200 by 155, we get 1 with a remainder of 45.
Use 1 as the next digit of our solution. 
Result so far: 137224.65161
If we subtract 155 from 200, we get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 14:
If we divide 450 by 155, we get 2 and a remainder of 140.
The next digit of our result is 2. 
Result so far: 137224.651612
Subtracting 310 from 450 leaves us with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

On to step 15:
155 can be fit into 1400 9 times, resulting in a remainder of 5.
The next digit of our result is 9. 
Result so far: 137224.6516129
If we subtract 1395 from 1400, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 16:
155 goes into 50 0 times with a remainder of 50.
Use 0 as the next digit of our solution. 
Result so far: 137224.6516129
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The final result is 137224.6516129 with a remainder of 5e-08.