We're dividing 6439339 by 359 
We want to figure out the number of times 6439339 can be divided by 359.

Going ahead to step 1:
If we divide 6 by 359, we get 0 and a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 359

Advancing to step 2:
64 divided by 359 is 0 with a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 64, we get 64.
Grab the next digit (3) from the dividend, add it to 64, then carry on: 643 / 359

Advancing to step 3:
643 divided by 359 is 1 with a remainder of 284.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 359 from 643 leaves us with 284.
Fetch the next digit (9) from the dividend, attach it to 284 and continue: 2849 / 359

Advancing to step 4:
The number 359 fits into 2849 7 times, leaving a remainder of 336.
Use 7 as the next digit of our solution. 
Result so far: 17.0
Subtract 2513 from 2849 to get 336.
Fetch the next digit (3) from the dividend, attach it to 336 and continue: 3363 / 359

Going ahead to step 5:
When dividing 3363 by 359, we get 9 with a remainder of 132.
Write down 9 as next digit of the result. 
Result so far: 179.0
Subtract 3231 from 3363 to get 132.
Take the next digit (3) from the dividend and append it to 132, then repeat: 1323 / 359

Step 6:
If we divide 1323 by 359, we get 3 and a remainder of 246.
Use 3 as the next digit of our solution. 
Result so far: 1793.0
If we take 1077 away from 1323, we end up with 246.
Fetch the next digit (9) from the dividend, attach it to 246 and continue: 2469 / 359

Moving on to step 7:
If we divide 2469 by 359, we get 6 and a remainder of 315.
The next digit of our result is 6. 
Result so far: 17936.0
If we subtract 2154 from 2469, we get 315.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

Moving on to step 8:
359 can be fit into 3150 8 times, resulting in a remainder of 278.
Use 8 as the next digit of our solution. 
Result so far: 17936.8
Deduct 2872 from 3150 and we're left with 278.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2780, and continue the process.

Step 9:
If we divide 2780 by 359, we get 7 and a remainder of 267.
The number 7 becomes the next digit in our result. 
Result so far: 17936.87
Deduct 2513 from 2780 and we're left with 267.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

Going ahead to step 10:
The number 359 fits into 2670 7 times, leaving a remainder of 157.
Write down 7 as next digit of the result. 
Result so far: 17936.877
If we subtract 2513 from 2670, we get 157.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1570, and continue the process.

After the division, we end up with 17936.877 and a remainder of 0.0157.