31215091 divided by 259 
We want to divide 31215091 by 259.

Advancing to step 1:
3 divided by 259 is 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Include the next digit (1) from the dividend after 3, then repeat: 31 / 259

On to step 2:
The number 259 fits into 31 0 times, leaving a remainder of 31.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 31 after subtracting 0 from 31.
Fetch the next digit (2) from the dividend, attach it to 31 and continue: 312 / 259

Going ahead to step 3:
259 can be fit into 312 1 times, resulting in a remainder of 53.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 259 away from 312, we end up with 53.
Take the next digit (1) from the dividend and append it to 53, then repeat: 531 / 259

Step 4:
The number 259 fits into 531 2 times, leaving a remainder of 13.
The next digit of our result is 2. 
Result so far: 12.0
The remainder is 13 after subtracting 518 from 531.
Take the next digit (5) from the dividend and append it to 13, then repeat: 135 / 259

Advancing to step 5:
If we divide 135 by 259, we get 0 and a remainder of 135.
The next digit of our result is 0. 
Result so far: 120.0
If we take 0 away from 135, we end up with 135.
Bring next digit (0) of the dividend behind the 135 and repeat the process: 1350 / 259

Moving on to step 6:
When dividing 1350 by 259, we get 5 with a remainder of 55.
Use 5 as the next digit of our solution. 
Result so far: 1205.0
If we take 1295 away from 1350, we end up with 55.
Take the next digit (9) from the dividend and append it to 55, then repeat: 559 / 259

Let's proceed to step 7:
If we divide 559 by 259, we get 2 and a remainder of 41.
Record the quotient 2 as the next digit in the result. 
Result so far: 12052.0
If we subtract 518 from 559, we get 41.
Take the next digit (1) from the dividend and append it to 41, then repeat: 411 / 259

Moving on to step 8:
411 divided by 259 is 1 with a remainder of 152.
Use 1 as the next digit of our solution. 
Result so far: 120521.0
Subtracting 259 from 411 leaves us with 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Going ahead to step 9:
1520 divided by 259 is 5 with a remainder of 225.
Record the quotient 5 as the next digit in the result. 
Result so far: 120521.5
The remainder is 225 after subtracting 1295 from 1520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Step 10:
If we divide 2250 by 259, we get 8 and a remainder of 178.
The next digit of our result is 8. 
Result so far: 120521.58
The remainder is 178 after subtracting 2072 from 2250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1780, and continue the process.

Step 11:
1780 divided by 259 is 6 with a remainder of 226.
Use 6 as the next digit of our solution. 
Result so far: 120521.586
If we take 1554 away from 1780, we end up with 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Advancing to step 12:
When dividing 2260 by 259, we get 8 with a remainder of 188.
Put 8 as the next digit of the answer. 
Result so far: 120521.5868
Deduct 2072 from 2260 and we're left with 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Moving on to step 13:
When dividing 1880 by 259, we get 7 with a remainder of 67.
Put 7 as the next digit of the answer. 
Result so far: 120521.58687
The remainder is 67 after subtracting 1813 from 1880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

On to step 14:
259 can be fit into 670 2 times, resulting in a remainder of 152.
The number 2 becomes the next digit in our result. 
Result so far: 120521.586872
Subtract 518 from 670 to get 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Moving on to step 15:
When dividing 1520 by 259, we get 5 with a remainder of 225.
Use 5 as the next digit of our solution. 
Result so far: 120521.5868725
Subtracting 1295 from 1520 leaves us with 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Let's proceed to step 16:
259 goes into 2250 8 times with a remainder of 178.
Record the quotient 8 as the next digit in the result. 
Result so far: 120521.58687258
If we take 2072 away from 2250, we end up with 178.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1780, and continue the process.

Our division results in 120521.58687258 with a remaining 1.78e-07.