We're dividing 21010447 by 135 
We want to figure out the number of times 21010447 can be divided by 135.

Going ahead to step 1:
135 goes into 2 0 times with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Take the next digit (1) from the dividend and append it to 2, then repeat: 21 / 135

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

Advancing to step 3:
135 goes into 210 1 times with a remainder of 75.
The next digit of our result is 1. 
Result so far: 1.0
If we take 135 away from 210, we end up with 75.
Append the next digit (1) from the dividend to 75 and continue with: 751 / 135

On to step 4:
The number 135 fits into 751 5 times, leaving a remainder of 76.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
Deduct 675 from 751 and we're left with 76.
Bring next digit (0) of the dividend behind the 76 and repeat the process: 760 / 135

Going ahead to step 5:
135 goes into 760 5 times with a remainder of 85.
Write down 5 as next digit of the result. 
Result so far: 155.0
The remainder is 85 after subtracting 675 from 760.
Grab the next digit (4) from the dividend, add it to 85, then carry on: 854 / 135

Advancing to step 6:
The number 135 fits into 854 6 times, leaving a remainder of 44.
Put 6 as the next digit of the answer. 
Result so far: 1556.0
If we take 810 away from 854, we end up with 44.
Fetch the next digit (4) from the dividend, attach it to 44 and continue: 444 / 135

Advancing to step 7:
135 can be fit into 444 3 times, resulting in a remainder of 39.
Write down 3 as next digit of the result. 
Result so far: 15563.0
Subtracting 405 from 444 leaves us with 39.
Append the next digit (7) from the dividend to 39 and continue with: 397 / 135

Moving on to step 8:
135 can be fit into 397 2 times, resulting in a remainder of 127.
Record the quotient 2 as the next digit in the result. 
Result so far: 155632.0
Subtract 270 from 397 to get 127.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1270, and continue the process.

Advancing to step 9:
The number 135 fits into 1270 9 times, leaving a remainder of 55.
Record the quotient 9 as the next digit in the result. 
Result so far: 155632.9
The remainder is 55 after subtracting 1215 from 1270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Advancing to step 10:
The number 135 fits into 550 4 times, leaving a remainder of 10.
The number 4 becomes the next digit in our result. 
Result so far: 155632.94
Deduct 540 from 550 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 11:
100 divided by 135 is 0 with a remainder of 100.
Write down 0 as next digit of the result. 
Result so far: 155632.94
The remainder is 100 after subtracting 0 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Moving on to step 12:
135 can be fit into 1000 7 times, resulting in a remainder of 55.
Put 7 as the next digit of the answer. 
Result so far: 155632.9407
Subtracting 945 from 1000 leaves us with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Let's proceed to step 13:
550 divided by 135 is 4 with a remainder of 10.
Record the quotient 4 as the next digit in the result. 
Result so far: 155632.94074
Deduct 540 from 550 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 14:
100 divided by 135 is 0 with a remainder of 100.
Record the quotient 0 as the next digit in the result. 
Result so far: 155632.94074
Subtract 0 from 100 to get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Going ahead to step 15:
135 can be fit into 1000 7 times, resulting in a remainder of 55.
The next digit of our result is 7. 
Result so far: 155632.9407407
The remainder is 55 after subtracting 945 from 1000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Step 16:
550 divided by 135 is 4 with a remainder of 10.
The number 4 becomes the next digit in our result. 
Result so far: 155632.94074074
Subtract 540 from 550 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

After the division, we end up with 155632.94074074 and a remainder of 1e-08.