21070928 divided by 135 
We want to figure out the number of times 21070928 can be divided by 135.

Step 1:
When dividing 2 by 135, we get 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 135

On to step 2:
The number 135 fits into 21 0 times, leaving a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Take the next digit (0) from the dividend and append it to 21, then repeat: 210 / 135

Going ahead to step 3:
135 can be fit into 210 1 times, resulting in a remainder of 75.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 135 from 210 and we're left with 75.
Bring next digit (7) of the dividend behind the 75 and repeat the process: 757 / 135

Going ahead to step 4:
757 divided by 135 is 5 with a remainder of 82.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
If we subtract 675 from 757, we get 82.
Append the next digit (0) from the dividend to 82 and continue with: 820 / 135

Going ahead to step 5:
When dividing 820 by 135, we get 6 with a remainder of 10.
The next digit of our result is 6. 
Result so far: 156.0
Deduct 810 from 820 and we're left with 10.
Fetch the next digit (9) from the dividend, attach it to 10 and continue: 109 / 135

Going ahead to step 6:
The number 135 fits into 109 0 times, leaving a remainder of 109.
Record the quotient 0 as the next digit in the result. 
Result so far: 1560.0
Subtracting 0 from 109 leaves us with 109.
Bring next digit (2) of the dividend behind the 109 and repeat the process: 1092 / 135

Going ahead to step 7:
1092 divided by 135 is 8 with a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 15608.0
If we take 1080 away from 1092, we end up with 12.
Grab the next digit (8) from the dividend, add it to 12, then carry on: 128 / 135

Moving on to step 8:
135 goes into 128 0 times with a remainder of 128.
The next digit of our result is 0. 
Result so far: 156080.0
If we subtract 0 from 128, we get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Advancing to step 9:
135 goes into 1280 9 times with a remainder of 65.
Put 9 as the next digit of the answer. 
Result so far: 156080.9
The remainder is 65 after subtracting 1215 from 1280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Advancing to step 10:
If we divide 650 by 135, we get 4 and a remainder of 110.
The number 4 becomes the next digit in our result. 
Result so far: 156080.94
If we take 540 away from 650, we end up with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Let's proceed to step 11:
135 can be fit into 1100 8 times, resulting in a remainder of 20.
Record the quotient 8 as the next digit in the result. 
Result so far: 156080.948
Subtracting 1080 from 1100 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 12:
200 divided by 135 is 1 with a remainder of 65.
Use 1 as the next digit of our solution. 
Result so far: 156080.9481
If we subtract 135 from 200, we get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Moving on to step 13:
If we divide 650 by 135, we get 4 and a remainder of 110.
Write down 4 as next digit of the result. 
Result so far: 156080.94814
Subtract 540 from 650 to get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Moving on to step 14:
If we divide 1100 by 135, we get 8 and a remainder of 20.
Use 8 as the next digit of our solution. 
Result so far: 156080.948148
The remainder is 20 after subtracting 1080 from 1100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 15:
When dividing 200 by 135, we get 1 with a remainder of 65.
Put 1 as the next digit of the answer. 
Result so far: 156080.9481481
Subtracting 135 from 200 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Advancing to step 16:
135 can be fit into 650 4 times, resulting in a remainder of 110.
The number 4 becomes the next digit in our result. 
Result so far: 156080.94814814
Deduct 540 from 650 and we're left with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

In conclusion, the division gives 156080.94814814 with a balance of 1.1e-07.