We're dividing 91642377 by 421 
We want to divide 91642377 by 421.

Going ahead to step 1:
If we divide 9 by 421, we get 0 and a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Fetch the next digit (1) from the dividend, attach it to 9 and continue: 91 / 421

On to step 2:
The number 421 fits into 91 0 times, leaving a remainder of 91.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 91, we get 91.
Include the next digit (6) from the dividend after 91, then repeat: 916 / 421

Advancing to step 3:
The number 421 fits into 916 2 times, leaving a remainder of 74.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Deduct 842 from 916 and we're left with 74.
Bring next digit (4) of the dividend behind the 74 and repeat the process: 744 / 421

On to step 4:
744 divided by 421 is 1 with a remainder of 323.
Put 1 as the next digit of the answer. 
Result so far: 21.0
Subtracting 421 from 744 leaves us with 323.
Fetch the next digit (2) from the dividend, attach it to 323 and continue: 3232 / 421

Moving on to step 5:
When dividing 3232 by 421, we get 7 with a remainder of 285.
Write down 7 as next digit of the result. 
Result so far: 217.0
Subtract 2947 from 3232 to get 285.
Fetch the next digit (3) from the dividend, attach it to 285 and continue: 2853 / 421

Moving on to step 6:
421 goes into 2853 6 times with a remainder of 327.
Put 6 as the next digit of the answer. 
Result so far: 2176.0
Subtracting 2526 from 2853 leaves us with 327.
Fetch the next digit (7) from the dividend, attach it to 327 and continue: 3277 / 421

Let's proceed to step 7:
3277 divided by 421 is 7 with a remainder of 330.
Record the quotient 7 as the next digit in the result. 
Result so far: 21767.0
If we subtract 2947 from 3277, we get 330.
Append the next digit (7) from the dividend to 330 and continue with: 3307 / 421

Moving on to step 8:
421 can be fit into 3307 7 times, resulting in a remainder of 360.
The number 7 becomes the next digit in our result. 
Result so far: 217677.0
Deduct 2947 from 3307 and we're left with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Let's proceed to step 9:
When dividing 3600 by 421, we get 8 with a remainder of 232.
The number 8 becomes the next digit in our result. 
Result so far: 217677.8
Subtracting 3368 from 3600 leaves us with 232.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2320, and continue the process.

Step 10:
421 goes into 2320 5 times with a remainder of 215.
Put 5 as the next digit of the answer. 
Result so far: 217677.85
Subtracting 2105 from 2320 leaves us with 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

On to step 11:
421 goes into 2150 5 times with a remainder of 45.
Record the quotient 5 as the next digit in the result. 
Result so far: 217677.855
Subtracting 2105 from 2150 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

After the division, we end up with 217677.855 and a remainder of 0.0045.