105140 ÷ 31 
Let's see how many times 31 fits into 105140.

Advancing to step 1:
31 can be fit into 1 0 times, resulting in a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (0) from the dividend to 1 and continue with: 10 / 31

Going ahead to step 2:
31 goes into 10 0 times with a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 10, we get 10.
Append the next digit (5) from the dividend to 10 and continue with: 105 / 31

Advancing to step 3:
31 can be fit into 105 3 times, resulting in a remainder of 12.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 93 from 105 and we're left with 12.
Fetch the next digit (1) from the dividend, attach it to 12 and continue: 121 / 31

Advancing to step 4:
When dividing 121 by 31, we get 3 with a remainder of 28.
Record the quotient 3 as the next digit in the result. 
Result so far: 33.0
If we take 93 away from 121, we end up with 28.
Fetch the next digit (4) from the dividend, attach it to 28 and continue: 284 / 31

Moving on to step 5:
31 goes into 284 9 times with a remainder of 5.
The next digit of our result is 9. 
Result so far: 339.0
Deduct 279 from 284 and we're left with 5.
Grab the next digit (0) from the dividend, add it to 5, then carry on: 50 / 31

Going ahead to step 6:
50 divided by 31 is 1 with a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 3391.0
If we take 31 away from 50, we end up with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 7:
If we divide 190 by 31, we get 6 and a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 3391.6
If we subtract 186 from 190, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 8:
31 can be fit into 40 1 times, resulting in a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 3391.61
Subtract 31 from 40 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 9:
90 divided by 31 is 2 with a remainder of 28.
Record the quotient 2 as the next digit in the result. 
Result so far: 3391.612
If we take 62 away from 90, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 10:
When dividing 280 by 31, we get 9 with a remainder of 1.
The next digit of our result is 9. 
Result so far: 3391.6129
Subtracting 279 from 280 leaves us 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.

Going ahead to step 11:
The number 31 fits into 10 0 times, leaving a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 3391.6129
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.

On to step 12:
If we divide 100 by 31, we get 3 and a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 3391.612903
Deduct 93 from 100 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 13:
70 divided by 31 is 2 with a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 3391.6129032
Subtracting 62 from 70 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 14:
31 goes into 80 2 times with a remainder of 18.
Record the quotient 2 as the next digit in the result. 
Result so far: 3391.61290322
If we take 62 away from 80, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

The final result is 3391.61290322 with a remainder of 1.8e-08.