91661957 divided by 312 
We want to divide 91661957 by 312.

Going ahead to step 1:
When dividing 9 by 312, we get 0 with a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Fetch the next digit (1) from the dividend, attach it to 9 and continue: 91 / 312

Moving on to step 2:
312 can be fit into 91 0 times, resulting in a remainder of 91.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 91, we get 91.
Bring next digit (6) of the dividend behind the 91 and repeat the process: 916 / 312

Step 3:
312 goes into 916 2 times with a remainder of 292.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 624 from 916, we get 292.
Grab the next digit (6) from the dividend, add it to 292, then carry on: 2926 / 312

Moving on to step 4:
312 goes into 2926 9 times with a remainder of 118.
The next digit of our result is 9. 
Result so far: 29.0
Subtracting 2808 from 2926 leaves us with 118.
Grab the next digit (1) from the dividend, add it to 118, then carry on: 1181 / 312

Going ahead to step 5:
The number 312 fits into 1181 3 times, leaving a remainder of 245.
The next digit of our result is 3. 
Result so far: 293.0
If we take 936 away from 1181, we end up with 245.
Fetch the next digit (9) from the dividend, attach it to 245 and continue: 2459 / 312

Let's proceed to step 6:
When dividing 2459 by 312, we get 7 with a remainder of 275.
Write down 7 as next digit of the result. 
Result so far: 2937.0
Deduct 2184 from 2459 and we're left with 275.
Bring next digit (5) of the dividend behind the 275 and repeat the process: 2755 / 312

Step 7:
312 goes into 2755 8 times with a remainder of 259.
The number 8 becomes the next digit in our result. 
Result so far: 29378.0
Subtracting 2496 from 2755 leaves us with 259.
Bring next digit (7) of the dividend behind the 259 and repeat the process: 2597 / 312

On to step 8:
312 can be fit into 2597 8 times, resulting in a remainder of 101.
Put 8 as the next digit of the answer. 
Result so far: 293788.0
If we take 2496 away from 2597, we end up with 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

Let's proceed to step 9:
1010 divided by 312 is 3 with a remainder of 74.
Record the quotient 3 as the next digit in the result. 
Result so far: 293788.3
If we subtract 936 from 1010, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

On to step 10:
When dividing 740 by 312, we get 2 with a remainder of 116.
Write down 2 as next digit of the result. 
Result so far: 293788.32
Deduct 624 from 740 and we're left with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Advancing to step 11:
If we divide 1160 by 312, we get 3 and a remainder of 224.
Put 3 as the next digit of the answer. 
Result so far: 293788.323
Deduct 936 from 1160 and we're left with 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Going ahead to step 12:
The number 312 fits into 2240 7 times, leaving a remainder of 56.
Use 7 as the next digit of our solution. 
Result so far: 293788.3237
If we subtract 2184 from 2240, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 13:
312 goes into 560 1 times with a remainder of 248.
The next digit of our result is 1. 
Result so far: 293788.32371
If we subtract 312 from 560, we get 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Moving on to step 14:
312 goes into 2480 7 times with a remainder of 296.
Record the quotient 7 as the next digit in the result. 
Result so far: 293788.323717
The remainder is 296 after subtracting 2184 from 2480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

Let's proceed to step 15:
312 can be fit into 2960 9 times, resulting in a remainder of 152.
The number 9 becomes the next digit in our result. 
Result so far: 293788.3237179
If we subtract 2808 from 2960, we 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.

On to step 16:
If we divide 1520 by 312, we get 4 and a remainder of 272.
Use 4 as the next digit of our solution. 
Result so far: 293788.32371794
Subtracting 1248 from 1520 leaves us with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

The final outcome is 293788.32371794, with a leftover of 2.72e-07.