Let's divide 90139 by 31
We want to divide 90139 by 31.

Going ahead to step 1:
When dividing 9 by 31, we get 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 31

Step 2:
If we divide 90 by 31, we get 2 and a remainder of 28.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 28 after subtracting 62 from 90.
Fetch the next digit (1) from the dividend, attach it to 28 and continue: 281 / 31

Let's proceed to step 3:
The number 31 fits into 281 9 times, leaving a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 29.0
The remainder is 2 after subtracting 279 from 281.
Bring next digit (3) of the dividend behind the 2 and repeat the process: 23 / 31

Going ahead to step 4:
The number 31 fits into 23 0 times, leaving a remainder of 23.
The next digit of our result is 0. 
Result so far: 290.0
If we take 0 away from 23, we end up with 23.
Grab the next digit (9) from the dividend, add it to 23, then carry on: 239 / 31

Advancing to step 5:
The number 31 fits into 239 7 times, leaving a remainder of 22.
Record the quotient 7 as the next digit in the result. 
Result so far: 2907.0
Subtracting 217 from 239 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 6:
220 divided by 31 is 7 with a remainder of 3.
The next digit of our result is 7. 
Result so far: 2907.7
If we take 217 away from 220, we end up with 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Advancing to step 7:
31 can be fit into 30 0 times, resulting in a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 2907.7
Subtract 0 from 30 to get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 8:
When dividing 300 by 31, we get 9 with a remainder of 21.
The next digit of our result is 9. 
Result so far: 2907.709
Deduct 279 from 300 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 9:
The number 31 fits into 210 6 times, leaving a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 2907.7096
Deduct 186 from 210 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 10:
The number 31 fits into 240 7 times, leaving a remainder of 23.
The next digit of our result is 7. 
Result so far: 2907.70967
Subtract 217 from 240 to get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

On to step 11:
31 can be fit into 230 7 times, resulting in a remainder of 13.
Put 7 as the next digit of the answer. 
Result so far: 2907.709677
If we take 217 away from 230, we end up with 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

After the division, we end up with 2907.709677 and a remainder of 1.3e-06.