18656251 divided by 420 
Our goal is to divide 18656251 by 420.

On to step 1:
The number 420 fits into 1 0 times, leaving a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 420

Let's proceed to step 2:
The number 420 fits into 18 0 times, leaving a remainder of 18.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 18 leaves us with 18.
Fetch the next digit (6) from the dividend, attach it to 18 and continue: 186 / 420

Step 3:
If we divide 186 by 420, we get 0 and a remainder of 186.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 186 after subtracting 0 from 186.
Fetch the next digit (5) from the dividend, attach it to 186 and continue: 1865 / 420

Step 4:
420 goes into 1865 4 times with a remainder of 185.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we subtract 1680 from 1865, we get 185.
Append the next digit (6) from the dividend to 185 and continue with: 1856 / 420

Moving on to step 5:
420 can be fit into 1856 4 times, resulting in a remainder of 176.
Record the quotient 4 as the next digit in the result. 
Result so far: 44.0
Deduct 1680 from 1856 and we're left with 176.
Fetch the next digit (2) from the dividend, attach it to 176 and continue: 1762 / 420

Going ahead to step 6:
420 can be fit into 1762 4 times, resulting in a remainder of 82.
Record the quotient 4 as the next digit in the result. 
Result so far: 444.0
Subtracting 1680 from 1762 leaves us with 82.
Grab the next digit (5) from the dividend, add it to 82, then carry on: 825 / 420

On to step 7:
When dividing 825 by 420, we get 1 with a remainder of 405.
Write down 1 as next digit of the result. 
Result so far: 4441.0
If we subtract 420 from 825, we get 405.
Fetch the next digit (1) from the dividend, attach it to 405 and continue: 4051 / 420

On to step 8:
The number 420 fits into 4051 9 times, leaving a remainder of 271.
Record the quotient 9 as the next digit in the result. 
Result so far: 44419.0
If we take 3780 away from 4051, we end up with 271.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2710, and continue the process.

Advancing to step 9:
2710 divided by 420 is 6 with a remainder of 190.
Use 6 as the next digit of our solution. 
Result so far: 44419.6
If we take 2520 away from 2710, we end up with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

On to step 10:
420 can be fit into 1900 4 times, resulting in a remainder of 220.
Write down 4 as next digit of the result. 
Result so far: 44419.64
The remainder is 220 after subtracting 1680 from 1900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

On to step 11:
420 can be fit into 2200 5 times, resulting in a remainder of 100.
Record the quotient 5 as the next digit in the result. 
Result so far: 44419.645
Subtract 2100 from 2200 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.

Step 12:
The number 420 fits into 1000 2 times, leaving a remainder of 160.
Use 2 as the next digit of our solution. 
Result so far: 44419.6452
Deduct 840 from 1000 and we're left with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Advancing to step 13:
The number 420 fits into 1600 3 times, leaving a remainder of 340.
Write down 3 as next digit of the result. 
Result so far: 44419.64523
If we take 1260 away from 1600, 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.

Let's proceed to step 14:
3400 divided by 420 is 8 with a remainder of 40.
The next digit of our result is 8. 
Result so far: 44419.645238
Deduct 3360 from 3400 and we're left with 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 15:
The number 420 fits into 400 0 times, leaving a remainder of 400.
The next digit of our result is 0. 
Result so far: 44419.645238
Subtracting 0 from 400 leaves us 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.

Advancing to step 16:
420 goes into 4000 9 times with a remainder of 220.
The number 9 becomes the next digit in our result. 
Result so far: 44419.64523809
If we take 3780 away from 4000, we end up with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

In conclusion, the division gives 44419.64523809 with a balance of 2.2e-07.