20187038 ÷ 421 
Let's see how many times 421 fits into 20187038.

Going ahead to step 1:
421 goes into 2 0 times with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Take the next digit (0) from the dividend and append it to 2, then repeat: 20 / 421

Advancing to step 2:
20 divided by 421 is 0 with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 20 leaves us with 20.
Take the next digit (1) from the dividend and append it to 20, then repeat: 201 / 421

On to step 3:
201 divided by 421 is 0 with a remainder of 201.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 201 and we're left with 201.
Take the next digit (8) from the dividend and append it to 201, then repeat: 2018 / 421

Step 4:
2018 divided by 421 is 4 with a remainder of 334.
The next digit of our result is 4. 
Result so far: 4.0
If we take 1684 away from 2018, we end up with 334.
Fetch the next digit (7) from the dividend, attach it to 334 and continue: 3347 / 421

Step 5:
When dividing 3347 by 421, we get 7 with a remainder of 400.
Write down 7 as next digit of the result. 
Result so far: 47.0
If we subtract 2947 from 3347, we get 400.
Fetch the next digit (0) from the dividend, attach it to 400 and continue: 4000 / 421

Going ahead to step 6:
If we divide 4000 by 421, we get 9 and a remainder of 211.
The number 9 becomes the next digit in our result. 
Result so far: 479.0
If we take 3789 away from 4000, we end up with 211.
Grab the next digit (3) from the dividend, add it to 211, then carry on: 2113 / 421

On to step 7:
When dividing 2113 by 421, we get 5 with a remainder of 8.
Record the quotient 5 as the next digit in the result. 
Result so far: 4795.0
Subtract 2105 from 2113 to get 8.
Take the next digit (8) from the dividend and append it to 8, then repeat: 88 / 421

On to step 8:
When dividing 88 by 421, we get 0 with a remainder of 88.
Record the quotient 0 as the next digit in the result. 
Result so far: 47950.0
Deduct 0 from 88 and we're left with 88.
Since there are no more digits in the dividend, we add a zero to the remainder making it 880, and continue the process.

Moving on to step 9:
421 can be fit into 880 2 times, resulting in a remainder of 38.
Put 2 as the next digit of the answer. 
Result so far: 47950.2
The remainder is 38 after subtracting 842 from 880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 10:
380 divided by 421 is 0 with a remainder of 380.
Write down 0 as next digit of the result. 
Result so far: 47950.2
Subtracting 0 from 380 leaves us with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Going ahead to step 11:
421 goes into 3800 9 times with a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 47950.209
Deduct 3789 from 3800 and we're left with 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Step 12:
The number 421 fits into 110 0 times, leaving a remainder of 110.
Write down 0 as next digit of the result. 
Result so far: 47950.209
The remainder is 110 after subtracting 0 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Going ahead to step 13:
If we divide 1100 by 421, we get 2 and a remainder of 258.
Use 2 as the next digit of our solution. 
Result so far: 47950.20902
Deduct 842 from 1100 and we're left with 258.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

Moving on to step 14:
421 can be fit into 2580 6 times, resulting in a remainder of 54.
The next digit of our result is 6. 
Result so far: 47950.209026
Subtract 2526 from 2580 to get 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 15:
The number 421 fits into 540 1 times, leaving a remainder of 119.
Put 1 as the next digit of the answer. 
Result so far: 47950.2090261
Subtracting 421 from 540 leaves us with 119.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1190, and continue the process.

Step 16:
1190 divided by 421 is 2 with a remainder of 348.
Put 2 as the next digit of the answer. 
Result so far: 47950.20902612
If we take 842 away from 1190, we end up with 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

The quotient of the division is 47950.20902612, and the remainder is 3.48e-07.