Let's divide 38662551 by 421
Let's see how many times 421 fits into 38662551.

Step 1:
421 can be fit into 3 0 times, resulting in a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Bring next digit (8) of the dividend behind the 3 and repeat the process: 38 / 421

Advancing to step 2:
If we divide 38 by 421, we get 0 and a remainder of 38.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 38 and we're left with 38.
Grab the next digit (6) from the dividend, add it to 38, then carry on: 386 / 421

Let's proceed to step 3:
When dividing 386 by 421, we get 0 with a remainder of 386.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 386 to get 386.
Bring next digit (6) of the dividend behind the 386 and repeat the process: 3866 / 421

Advancing to step 4:
If we divide 3866 by 421, we get 9 and a remainder of 77.
Use 9 as the next digit of our solution. 
Result so far: 9.0
If we subtract 3789 from 3866, we get 77.
Append the next digit (2) from the dividend to 77 and continue with: 772 / 421

Moving on to step 5:
The number 421 fits into 772 1 times, leaving a remainder of 351.
Use 1 as the next digit of our solution. 
Result so far: 91.0
Subtract 421 from 772 to get 351.
Fetch the next digit (5) from the dividend, attach it to 351 and continue: 3515 / 421

Moving on to step 6:
When dividing 3515 by 421, we get 8 with a remainder of 147.
Record the quotient 8 as the next digit in the result. 
Result so far: 918.0
If we take 3368 away from 3515, we end up with 147.
Bring next digit (5) of the dividend behind the 147 and repeat the process: 1475 / 421

Advancing to step 7:
When dividing 1475 by 421, we get 3 with a remainder of 212.
Put 3 as the next digit of the answer. 
Result so far: 9183.0
If we subtract 1263 from 1475, we get 212.
Include the next digit (1) from the dividend after 212, then repeat: 2121 / 421

On to step 8:
421 goes into 2121 5 times with a remainder of 16.
Put 5 as the next digit of the answer. 
Result so far: 91835.0
Subtract 2105 from 2121 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 9:
If we divide 160 by 421, we get 0 and a remainder of 160.
The number 0 becomes the next digit in our result. 
Result so far: 91835.0
If we subtract 0 from 160, we get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 10:
1600 divided by 421 is 3 with a remainder of 337.
Record the quotient 3 as the next digit in the result. 
Result so far: 91835.03
Deduct 1263 from 1600 and we're left with 337.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3370, and continue the process.

Moving on to step 11:
421 goes into 3370 8 times with a remainder of 2.
Record the quotient 8 as the next digit in the result. 
Result so far: 91835.038
If we take 3368 away from 3370, we end up with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 12:
421 goes into 20 0 times with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 91835.038
Deduct 0 from 20 and we're left 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.

Step 13:
If we divide 200 by 421, we get 0 and a remainder of 200.
The number 0 becomes the next digit in our result. 
Result so far: 91835.038
Subtracting 0 from 200 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Our division results in 91835.038 with a remaining 0.0002.