We look at the division of 210315 by 91 
We want to figure out the number of times 210315 can be divided by 91.

On to step 1:
The number 91 fits into 2 0 times, leaving a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 91

Going ahead to step 2:
If we divide 21 by 91, we get 0 and a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Grab the next digit (0) from the dividend, add it to 21, then carry on: 210 / 91

Going ahead to step 3:
210 divided by 91 is 2 with a remainder of 28.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 182 from 210, we get 28.
Grab the next digit (3) from the dividend, add it to 28, then carry on: 283 / 91

Advancing to step 4:
The number 91 fits into 283 3 times, leaving a remainder of 10.
Use 3 as the next digit of our solution. 
Result so far: 23.0
If we subtract 273 from 283, we get 10.
Grab the next digit (1) from the dividend, add it to 10, then carry on: 101 / 91

Going ahead to step 5:
The number 91 fits into 101 1 times, leaving a remainder of 10.
The next digit of our result is 1. 
Result so far: 231.0
Subtracting 91 from 101 leaves us with 10.
Append the next digit (5) from the dividend to 10 and continue with: 105 / 91

Moving on to step 6:
105 divided by 91 is 1 with a remainder of 14.
Write down 1 as next digit of the result. 
Result so far: 2311.0
Deduct 91 from 105 and we're left with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 7:
When dividing 140 by 91, we get 1 with a remainder of 49.
The number 1 becomes the next digit in our result. 
Result so far: 2311.1
Subtracting 91 from 140 leaves us with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Going ahead to step 8:
91 goes into 490 5 times with a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 2311.15
Subtracting 455 from 490 leaves us with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 9:
350 divided by 91 is 3 with a remainder of 77.
Record the quotient 3 as the next digit in the result. 
Result so far: 2311.153
If we subtract 273 from 350, we get 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Advancing to step 10:
91 goes into 770 8 times with a remainder of 42.
The number 8 becomes the next digit in our result. 
Result so far: 2311.1538
The remainder is 42 after subtracting 728 from 770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 11:
When dividing 420 by 91, we get 4 with a remainder of 56.
Use 4 as the next digit of our solution. 
Result so far: 2311.15384
If we take 364 away from 420, we end up with 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 12:
If we divide 560 by 91, we get 6 and a remainder of 14.
The next digit of our result is 6. 
Result so far: 2311.153846
Subtracting 546 from 560 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 13:
91 goes into 140 1 times with a remainder of 49.
Write down 1 as next digit of the result. 
Result so far: 2311.1538461
If we subtract 91 from 140, we get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Moving on to step 14:
91 can be fit into 490 5 times, resulting in a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 2311.15384615
If we subtract 455 from 490, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The final outcome is 2311.15384615, with a leftover of 3.5e-08.