31391056 ÷ 306 
We want to divide 31391056 by 306.

Advancing to step 1:
The number 306 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Include the next digit (1) from the dividend after 3, then repeat: 31 / 306

Advancing to step 2:
306 can be fit into 31 0 times, resulting in a remainder of 31.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 31 leaves us with 31.
Append the next digit (3) from the dividend to 31 and continue with: 313 / 306

Going ahead to step 3:
The number 306 fits into 313 1 times, leaving a remainder of 7.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 306 from 313 and we're left with 7.
Include the next digit (9) from the dividend after 7, then repeat: 79 / 306

Moving on to step 4:
306 can be fit into 79 0 times, resulting in a remainder of 79.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
The remainder is 79 after subtracting 0 from 79.
Grab the next digit (1) from the dividend, add it to 79, then carry on: 791 / 306

Advancing to step 5:
The number 306 fits into 791 2 times, leaving a remainder of 179.
Put 2 as the next digit of the answer. 
Result so far: 102.0
Subtracting 612 from 791 leaves us with 179.
Grab the next digit (0) from the dividend, add it to 179, then carry on: 1790 / 306

Advancing to step 6:
1790 divided by 306 is 5 with a remainder of 260.
The number 5 becomes the next digit in our result. 
Result so far: 1025.0
The remainder is 260 after subtracting 1530 from 1790.
Grab the next digit (5) from the dividend, add it to 260, then carry on: 2605 / 306

Advancing to step 7:
306 can be fit into 2605 8 times, resulting in a remainder of 157.
The next digit of our result is 8. 
Result so far: 10258.0
If we subtract 2448 from 2605, we get 157.
Bring next digit (6) of the dividend behind the 157 and repeat the process: 1576 / 306

Step 8:
The number 306 fits into 1576 5 times, leaving a remainder of 46.
Record the quotient 5 as the next digit in the result. 
Result so far: 102585.0
If we take 1530 away from 1576, we end up with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 9:
306 goes into 460 1 times with a remainder of 154.
Use 1 as the next digit of our solution. 
Result so far: 102585.1
If we subtract 306 from 460, we get 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

Step 10:
If we divide 1540 by 306, we get 5 and a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 102585.15
Subtract 1530 from 1540 to 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 11:
The number 306 fits into 100 0 times, leaving a remainder of 100.
Put 0 as the next digit of the answer. 
Result so far: 102585.15
Subtracting 0 from 100 leaves us with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Going ahead to step 12:
306 can be fit into 1000 3 times, resulting in a remainder of 82.
Record the quotient 3 as the next digit in the result. 
Result so far: 102585.1503
If we subtract 918 from 1000, we get 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Advancing to step 13:
If we divide 820 by 306, we get 2 and a remainder of 208.
Put 2 as the next digit of the answer. 
Result so far: 102585.15032
The remainder is 208 after subtracting 612 from 820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Advancing to step 14:
306 goes into 2080 6 times with a remainder of 244.
The number 6 becomes the next digit in our result. 
Result so far: 102585.150326
Deduct 1836 from 2080 and we're left with 244.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2440, and continue the process.

Step 15:
306 can be fit into 2440 7 times, resulting in a remainder of 298.
Put 7 as the next digit of the answer. 
Result so far: 102585.1503267
If we subtract 2142 from 2440, we get 298.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2980, and continue the process.

Moving on to step 16:
When dividing 2980 by 306, we get 9 with a remainder of 226.
Use 9 as the next digit of our solution. 
Result so far: 102585.15032679
If we take 2754 away from 2980, 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.

The final outcome is 102585.15032679, with a leftover of 2.26e-07.