We're dividing 21066370 by 435 
We want to divide 21066370 by 435.

Going ahead to step 1:
2 divided by 435 is 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 435

Moving on to step 2:
435 can be fit into 21 0 times, resulting in a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Include the next digit (0) from the dividend after 21, then repeat: 210 / 435

Moving on to step 3:
435 can be fit into 210 0 times, resulting in a remainder of 210.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 210 and we're left with 210.
Take the next digit (6) from the dividend and append it to 210, then repeat: 2106 / 435

On to step 4:
The number 435 fits into 2106 4 times, leaving a remainder of 366.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we subtract 1740 from 2106, we get 366.
Take the next digit (6) from the dividend and append it to 366, then repeat: 3666 / 435

Let's proceed to step 5:
When dividing 3666 by 435, we get 8 with a remainder of 186.
Write down 8 as next digit of the result. 
Result so far: 48.0
Subtract 3480 from 3666 to get 186.
Bring next digit (3) of the dividend behind the 186 and repeat the process: 1863 / 435

Advancing to step 6:
435 can be fit into 1863 4 times, resulting in a remainder of 123.
Write down 4 as next digit of the result. 
Result so far: 484.0
Subtract 1740 from 1863 to get 123.
Take the next digit (7) from the dividend and append it to 123, then repeat: 1237 / 435

Step 7:
The number 435 fits into 1237 2 times, leaving a remainder of 367.
Record the quotient 2 as the next digit in the result. 
Result so far: 4842.0
Subtracting 870 from 1237 leaves us with 367.
Include the next digit (0) from the dividend after 367, then repeat: 3670 / 435

Advancing to step 8:
435 can be fit into 3670 8 times, resulting in a remainder of 190.
Use 8 as the next digit of our solution. 
Result so far: 48428.0
The remainder is 190 after subtracting 3480 from 3670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Step 9:
435 goes into 1900 4 times with a remainder of 160.
The number 4 becomes the next digit in our result. 
Result so far: 48428.4
The remainder is 160 after subtracting 1740 from 1900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Moving on to step 10:
The number 435 fits into 1600 3 times, leaving a remainder of 295.
Write down 3 as next digit of the result. 
Result so far: 48428.43
Subtract 1305 from 1600 to get 295.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

Advancing to step 11:
435 can be fit into 2950 6 times, resulting in a remainder of 340.
Put 6 as the next digit of the answer. 
Result so far: 48428.436
If we take 2610 away from 2950, we end up with 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Step 12:
435 goes into 3400 7 times with a remainder of 355.
Use 7 as the next digit of our solution. 
Result so far: 48428.4367
Subtracting 3045 from 3400 leaves us with 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Let's proceed to step 13:
The number 435 fits into 3550 8 times, leaving a remainder of 70.
Write down 8 as next digit of the result. 
Result so far: 48428.43678
Subtract 3480 from 3550 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

On to step 14:
The number 435 fits into 700 1 times, leaving a remainder of 265.
Write down 1 as next digit of the result. 
Result so far: 48428.436781
The remainder is 265 after subtracting 435 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

Going ahead to step 15:
If we divide 2650 by 435, we get 6 and a remainder of 40.
The number 6 becomes the next digit in our result. 
Result so far: 48428.4367816
If we subtract 2610 from 2650, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 16:
When dividing 400 by 435, we get 0 with a remainder of 400.
Write down 0 as next digit of the result. 
Result so far: 48428.4367816
Deduct 0 from 400 and we're left with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

The final result is 48428.4367816 with a remainder of 4e-07.