We're dividing 63999438 by 415 
We want to figure out the number of times 63999438 can be divided by 415.

Advancing to step 1:
6 divided by 415 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 415

Going ahead to step 2:
When dividing 63 by 415, we get 0 with a remainder of 63.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 63 to get 63.
Grab the next digit (9) from the dividend, add it to 63, then carry on: 639 / 415

On to step 3:
415 can be fit into 639 1 times, resulting in a remainder of 224.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 224 after subtracting 415 from 639.
Append the next digit (9) from the dividend to 224 and continue with: 2249 / 415

Let's proceed to step 4:
415 can be fit into 2249 5 times, resulting in a remainder of 174.
Put 5 as the next digit of the answer. 
Result so far: 15.0
If we subtract 2075 from 2249, we get 174.
Include the next digit (9) from the dividend after 174, then repeat: 1749 / 415

Going ahead to step 5:
1749 divided by 415 is 4 with a remainder of 89.
The number 4 becomes the next digit in our result. 
Result so far: 154.0
If we take 1660 away from 1749, we end up with 89.
Append the next digit (4) from the dividend to 89 and continue with: 894 / 415

Advancing to step 6:
415 goes into 894 2 times with a remainder of 64.
The number 2 becomes the next digit in our result. 
Result so far: 1542.0
If we subtract 830 from 894, we get 64.
Fetch the next digit (3) from the dividend, attach it to 64 and continue: 643 / 415

On to step 7:
643 divided by 415 is 1 with a remainder of 228.
The next digit of our result is 1. 
Result so far: 15421.0
Subtracting 415 from 643 leaves us with 228.
Fetch the next digit (8) from the dividend, attach it to 228 and continue: 2288 / 415

On to step 8:
415 goes into 2288 5 times with a remainder of 213.
Use 5 as the next digit of our solution. 
Result so far: 154215.0
The remainder is 213 after subtracting 2075 from 2288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2130, and continue the process.

Step 9:
When dividing 2130 by 415, we get 5 with a remainder of 55.
The next digit of our result is 5. 
Result so far: 154215.5
Subtracting 2075 from 2130 leaves us with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 10:
If we divide 550 by 415, we get 1 and a remainder of 135.
Record the quotient 1 as the next digit in the result. 
Result so far: 154215.51
The remainder is 135 after subtracting 415 from 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Let's proceed to step 11:
415 can be fit into 1350 3 times, resulting in a remainder of 105.
The number 3 becomes the next digit in our result. 
Result so far: 154215.513
Deduct 1245 from 1350 and we're left with 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Going ahead to step 12:
415 can be fit into 1050 2 times, resulting in a remainder of 220.
Put 2 as the next digit of the answer. 
Result so far: 154215.5132
Subtracting 830 from 1050 leaves us 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.

Let's proceed to step 13:
If we divide 2200 by 415, we get 5 and a remainder of 125.
Record the quotient 5 as the next digit in the result. 
Result so far: 154215.51325
If we subtract 2075 from 2200, we get 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

On to step 14:
415 goes into 1250 3 times with a remainder of 5.
Write down 3 as next digit of the result. 
Result so far: 154215.513253
If we subtract 1245 from 1250, we get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 15:
50 divided by 415 is 0 with a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 154215.513253
The remainder is 50 after subtracting 0 from 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 16:
When dividing 500 by 415, we get 1 with a remainder of 85.
Put 1 as the next digit of the answer. 
Result so far: 154215.51325301
If we subtract 415 from 500, we get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

The final result is 154215.51325301 with a remainder of 8.5e-08.