We're dividing 39224278 by 643 
We want to figure out the number of times 39224278 can be divided by 643.

Moving on to step 1:
When dividing 3 by 643, we get 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Grab the next digit (9) from the dividend, add it to 3, then carry on: 39 / 643

Advancing to step 2:
The number 643 fits into 39 0 times, leaving a remainder of 39.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 39 to get 39.
Append the next digit (2) from the dividend to 39 and continue with: 392 / 643

Moving on to step 3:
When dividing 392 by 643, we get 0 with a remainder of 392.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 392, we end up with 392.
Bring next digit (2) of the dividend behind the 392 and repeat the process: 3922 / 643

On to step 4:
The number 643 fits into 3922 6 times, leaving a remainder of 64.
The next digit of our result is 6. 
Result so far: 6.0
Subtracting 3858 from 3922 leaves us with 64.
Include the next digit (4) from the dividend after 64, then repeat: 644 / 643

Going ahead to step 5:
643 can be fit into 644 1 times, resulting in a remainder of 1.
The next digit of our result is 1. 
Result so far: 61.0
If we subtract 643 from 644, we get 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 643

Going ahead to step 6:
643 can be fit into 12 0 times, resulting in a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 610.0
The remainder is 12 after subtracting 0 from 12.
Include the next digit (7) from the dividend after 12, then repeat: 127 / 643

Moving on to step 7:
643 goes into 127 0 times with a remainder of 127.
The number 0 becomes the next digit in our result. 
Result so far: 6100.0
If we subtract 0 from 127, we get 127.
Take the next digit (8) from the dividend and append it to 127, then repeat: 1278 / 643

Moving on to step 8:
643 can be fit into 1278 1 times, resulting in a remainder of 635.
The number 1 becomes the next digit in our result. 
Result so far: 61001.0
Subtracting 643 from 1278 leaves us with 635.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6350, and continue the process.

Moving on to step 9:
643 goes into 6350 9 times with a remainder of 563.
Put 9 as the next digit of the answer. 
Result so far: 61001.9
Subtracting 5787 from 6350 leaves us with 563.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5630, and continue the process.

Step 10:
643 goes into 5630 8 times with a remainder of 486.
Use 8 as the next digit of our solution. 
Result so far: 61001.98
Subtracting 5144 from 5630 leaves us with 486.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4860, and continue the process.

Step 11:
4860 divided by 643 is 7 with a remainder of 359.
Put 7 as the next digit of the answer. 
Result so far: 61001.987
If we take 4501 away from 4860, we end up with 359.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3590, and continue the process.

On to step 12:
The number 643 fits into 3590 5 times, leaving a remainder of 375.
The number 5 becomes the next digit in our result. 
Result so far: 61001.9875
If we subtract 3215 from 3590, we get 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Going ahead to step 13:
643 goes into 3750 5 times with a remainder of 535.
Use 5 as the next digit of our solution. 
Result so far: 61001.98755
Subtract 3215 from 3750 to get 535.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5350, and continue the process.

After the division, we end up with 61001.98755 and a remainder of 0.000535.