Let's divide 639849 by 88
We want to divide 639849 by 88.

Advancing to step 1:
88 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (3) from the dividend to 6 and continue with: 63 / 88

Advancing to step 2:
The number 88 fits into 63 0 times, leaving a remainder of 63.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 63 to get 63.
Append the next digit (9) from the dividend to 63 and continue with: 639 / 88

Advancing to step 3:
If we divide 639 by 88, we get 7 and a remainder of 23.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
Deduct 616 from 639 and we're left with 23.
Bring next digit (8) of the dividend behind the 23 and repeat the process: 238 / 88

On to step 4:
If we divide 238 by 88, we get 2 and a remainder of 62.
Use 2 as the next digit of our solution. 
Result so far: 72.0
Subtracting 176 from 238 leaves us with 62.
Append the next digit (4) from the dividend to 62 and continue with: 624 / 88

Advancing to step 5:
88 goes into 624 7 times with a remainder of 8.
Record the quotient 7 as the next digit in the result. 
Result so far: 727.0
If we subtract 616 from 624, we get 8.
Grab the next digit (9) from the dividend, add it to 8, then carry on: 89 / 88

On to step 6:
When dividing 89 by 88, we get 1 with a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 7271.0
Deduct 88 from 89 and we're left with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

On to step 7:
When dividing 10 by 88, we get 0 with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 7271.0
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
88 can be fit into 100 1 times, resulting in a remainder of 12.
Put 1 as the next digit of the answer. 
Result so far: 7271.01
Subtracting 88 from 100 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 9:
120 divided by 88 is 1 with a remainder of 32.
Put 1 as the next digit of the answer. 
Result so far: 7271.011
Deduct 88 from 120 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

After the division, we end up with 7271.011 and a remainder of 0.0032.