We're dividing 139050 by 31 
Our goal is to divide 139050 by 31.

Step 1:
31 goes into 1 0 times with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 31

Step 2:
13 divided by 31 is 0 with a remainder of 13.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 13 leaves us with 13.
Grab the next digit (9) from the dividend, add it to 13, then carry on: 139 / 31

Moving on to step 3:
The number 31 fits into 139 4 times, leaving a remainder of 15.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 124 away from 139, we end up with 15.
Take the next digit (0) from the dividend and append it to 15, then repeat: 150 / 31

Going ahead to step 4:
31 can be fit into 150 4 times, resulting in a remainder of 26.
The next digit of our result is 4. 
Result so far: 44.0
If we take 124 away from 150, we end up with 26.
Take the next digit (5) from the dividend and append it to 26, then repeat: 265 / 31

Step 5:
31 goes into 265 8 times with a remainder of 17.
Use 8 as the next digit of our solution. 
Result so far: 448.0
Subtract 248 from 265 to get 17.
Fetch the next digit (0) from the dividend, attach it to 17 and continue: 170 / 31

Advancing to step 6:
The number 31 fits into 170 5 times, leaving a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 4485.0
Subtracting 155 from 170 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 7:
When dividing 150 by 31, we get 4 with a remainder of 26.
The next digit of our result is 4. 
Result so far: 4485.4
Deduct 124 from 150 and we're left with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 8:
31 can be fit into 260 8 times, resulting in a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 4485.48
Subtract 248 from 260 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 9:
When dividing 120 by 31, we get 3 with a remainder of 27.
The next digit of our result is 3. 
Result so far: 4485.483
If we subtract 93 from 120, we get 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Moving on to step 10:
If we divide 270 by 31, we get 8 and a remainder of 22.
Put 8 as the next digit of the answer. 
Result so far: 4485.4838
The remainder is 22 after subtracting 248 from 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 11:
The number 31 fits into 220 7 times, leaving a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 4485.48387
Subtracting 217 from 220 leaves us 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.

Step 12:
31 can be fit into 30 0 times, resulting in a remainder of 30.
The next digit of our result is 0. 
Result so far: 4485.48387
If we take 0 away from 30, we end up with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 13:
If we divide 300 by 31, we get 9 and a remainder of 21.
Use 9 as the next digit of our solution. 
Result so far: 4485.4838709
If we take 279 away from 300, we end up 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.

Moving on to step 14:
31 can be fit into 210 6 times, resulting in a remainder of 24.
Write down 6 as next digit of the result. 
Result so far: 4485.48387096
If we subtract 186 from 210, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The final result is 4485.48387096 with a remainder of 2.4e-08.