We're dividing 63924590 by 647 
We want to figure out the number of times 63924590 can be divided by 647.

Advancing to step 1:
The number 647 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Include the next digit (3) from the dividend after 6, then repeat: 63 / 647

Moving on to step 2:
63 divided by 647 is 0 with a remainder of 63.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 63 after subtracting 0 from 63.
Fetch the next digit (9) from the dividend, attach it to 63 and continue: 639 / 647

Moving on to step 3:
647 goes into 639 0 times with a remainder of 639.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 639, we get 639.
Include the next digit (2) from the dividend after 639, then repeat: 6392 / 647

On to step 4:
6392 divided by 647 is 9 with a remainder of 569.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we take 5823 away from 6392, we end up with 569.
Append the next digit (4) from the dividend to 569 and continue with: 5694 / 647

On to step 5:
If we divide 5694 by 647, we get 8 and a remainder of 518.
The next digit of our result is 8. 
Result so far: 98.0
The remainder is 518 after subtracting 5176 from 5694.
Fetch the next digit (5) from the dividend, attach it to 518 and continue: 5185 / 647

Moving on to step 6:
When dividing 5185 by 647, we get 8 with a remainder of 9.
Put 8 as the next digit of the answer. 
Result so far: 988.0
If we take 5176 away from 5185, we end up with 9.
Include the next digit (9) from the dividend after 9, then repeat: 99 / 647

Let's proceed to step 7:
If we divide 99 by 647, we get 0 and a remainder of 99.
Use 0 as the next digit of our solution. 
Result so far: 9880.0
Deduct 0 from 99 and we're left with 99.
Fetch the next digit (0) from the dividend, attach it to 99 and continue: 990 / 647

Step 8:
990 divided by 647 is 1 with a remainder of 343.
Put 1 as the next digit of the answer. 
Result so far: 98801.0
Deduct 647 from 990 and we're left with 343.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3430, and continue the process.

Let's proceed to step 9:
3430 divided by 647 is 5 with a remainder of 195.
Use 5 as the next digit of our solution. 
Result so far: 98801.5
Subtract 3235 from 3430 to get 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Step 10:
The number 647 fits into 1950 3 times, leaving a remainder of 9.
Put 3 as the next digit of the answer. 
Result so far: 98801.53
The remainder is 9 after subtracting 1941 from 1950.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Advancing to step 11:
When dividing 90 by 647, we get 0 with a remainder of 90.
Put 0 as the next digit of the answer. 
Result so far: 98801.53
Subtract 0 from 90 to get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Let's proceed to step 12:
900 divided by 647 is 1 with a remainder of 253.
Use 1 as the next digit of our solution. 
Result so far: 98801.5301
Deduct 647 from 900 and we're left with 253.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2530, and continue the process.

Advancing to step 13:
The number 647 fits into 2530 3 times, leaving a remainder of 589.
The next digit of our result is 3. 
Result so far: 98801.53013
If we take 1941 away from 2530, we end up with 589.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5890, and continue the process.

Step 14:
647 goes into 5890 9 times with a remainder of 67.
The number 9 becomes the next digit in our result. 
Result so far: 98801.530139
If we subtract 5823 from 5890, we get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Let's proceed to step 15:
647 goes into 670 1 times with a remainder of 23.
Write down 1 as next digit of the result. 
Result so far: 98801.5301391
Subtracting 647 from 670 leaves us with 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Step 16:
When dividing 230 by 647, we get 0 with a remainder of 230.
Use 0 as the next digit of our solution. 
Result so far: 98801.5301391
Subtract 0 from 230 to get 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

The final outcome is 98801.5301391, with a leftover of 2.3e-07.