We're dividing 63936244 by 421 
We're looking to find how many times 421 goes into 63936244.

Let's proceed to step 1:
421 can be fit into 6 0 times, resulting in a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 421

Step 2:
63 divided by 421 is 0 with a remainder of 63.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 63 and we're left with 63.
Append the next digit (9) from the dividend to 63 and continue with: 639 / 421

Advancing to step 3:
639 divided by 421 is 1 with a remainder of 218.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 421 from 639 to get 218.
Grab the next digit (3) from the dividend, add it to 218, then carry on: 2183 / 421

Going ahead to step 4:
If we divide 2183 by 421, we get 5 and a remainder of 78.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Subtract 2105 from 2183 to get 78.
Append the next digit (6) from the dividend to 78 and continue with: 786 / 421

Advancing to step 5:
421 can be fit into 786 1 times, resulting in a remainder of 365.
Put 1 as the next digit of the answer. 
Result so far: 151.0
Deduct 421 from 786 and we're left with 365.
Append the next digit (2) from the dividend to 365 and continue with: 3652 / 421

Step 6:
421 can be fit into 3652 8 times, resulting in a remainder of 284.
The next digit of our result is 8. 
Result so far: 1518.0
If we take 3368 away from 3652, we end up with 284.
Take the next digit (4) from the dividend and append it to 284, then repeat: 2844 / 421

Going ahead to step 7:
2844 divided by 421 is 6 with a remainder of 318.
Put 6 as the next digit of the answer. 
Result so far: 15186.0
Subtract 2526 from 2844 to get 318.
Include the next digit (4) from the dividend after 318, then repeat: 3184 / 421

Moving on to step 8:
If we divide 3184 by 421, we get 7 and a remainder of 237.
Write down 7 as next digit of the result. 
Result so far: 151867.0
The remainder is 237 after subtracting 2947 from 3184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2370, and continue the process.

Going ahead to step 9:
If we divide 2370 by 421, we get 5 and a remainder of 265.
Use 5 as the next digit of our solution. 
Result so far: 151867.5
If we subtract 2105 from 2370, we get 265.
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 10:
421 can be fit into 2650 6 times, resulting in a remainder of 124.
Put 6 as the next digit of the answer. 
Result so far: 151867.56
If we take 2526 away from 2650, we end up with 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Step 11:
1240 divided by 421 is 2 with a remainder of 398.
Record the quotient 2 as the next digit in the result. 
Result so far: 151867.562
If we take 842 away from 1240, we end up with 398.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3980, and continue the process.

On to step 12:
The number 421 fits into 3980 9 times, leaving a remainder of 191.
Write down 9 as next digit of the result. 
Result so far: 151867.5629
If we take 3789 away from 3980, we end up with 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Step 13:
If we divide 1910 by 421, we get 4 and a remainder of 226.
Record the quotient 4 as the next digit in the result. 
Result so far: 151867.56294
If we take 1684 away from 1910, we end up with 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Step 14:
If we divide 2260 by 421, we get 5 and a remainder of 155.
Put 5 as the next digit of the answer. 
Result so far: 151867.562945
Subtract 2105 from 2260 to get 155.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1550, and continue the process.

Going ahead to step 15:
The number 421 fits into 1550 3 times, leaving a remainder of 287.
Write down 3 as next digit of the result. 
Result so far: 151867.5629453
If we take 1263 away from 1550, we end up with 287.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2870, and continue the process.

Advancing to step 16:
2870 divided by 421 is 6 with a remainder of 344.
Put 6 as the next digit of the answer. 
Result so far: 151867.56294536
Subtract 2526 from 2870 to get 344.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3440, and continue the process.

The final outcome is 151867.56294536, with a leftover of 3.44e-07.