91214590 divided by 237 
We want to figure out the number of times 91214590 can be divided by 237.

On to step 1:
If we divide 9 by 237, we get 0 and a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 237

Step 2:
237 can be fit into 91 0 times, resulting in a remainder of 91.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 91 after subtracting 0 from 91.
Bring next digit (2) of the dividend behind the 91 and repeat the process: 912 / 237

Let's proceed to step 3:
If we divide 912 by 237, we get 3 and a remainder of 201.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 201 after subtracting 711 from 912.
Take the next digit (1) from the dividend and append it to 201, then repeat: 2011 / 237

On to step 4:
If we divide 2011 by 237, we get 8 and a remainder of 115.
Write down 8 as next digit of the result. 
Result so far: 38.0
Subtracting 1896 from 2011 leaves us with 115.
Append the next digit (4) from the dividend to 115 and continue with: 1154 / 237

Let's proceed to step 5:
When dividing 1154 by 237, we get 4 with a remainder of 206.
Use 4 as the next digit of our solution. 
Result so far: 384.0
If we take 948 away from 1154, we end up with 206.
Grab the next digit (5) from the dividend, add it to 206, then carry on: 2065 / 237

Advancing to step 6:
237 goes into 2065 8 times with a remainder of 169.
Use 8 as the next digit of our solution. 
Result so far: 3848.0
Subtract 1896 from 2065 to get 169.
Grab the next digit (9) from the dividend, add it to 169, then carry on: 1699 / 237

On to step 7:
237 goes into 1699 7 times with a remainder of 40.
Use 7 as the next digit of our solution. 
Result so far: 38487.0
Subtracting 1659 from 1699 leaves us with 40.
Grab the next digit (0) from the dividend, add it to 40, then carry on: 400 / 237

Going ahead to step 8:
237 can be fit into 400 1 times, resulting in a remainder of 163.
The number 1 becomes the next digit in our result. 
Result so far: 384871.0
Deduct 237 from 400 and we're left with 163.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1630, and continue the process.

Moving on to step 9:
If we divide 1630 by 237, we get 6 and a remainder of 208.
Write down 6 as next digit of the result. 
Result so far: 384871.6
If we subtract 1422 from 1630, we get 208.
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 10:
237 can be fit into 2080 8 times, resulting in a remainder of 184.
The next digit of our result is 8. 
Result so far: 384871.68
If we take 1896 away from 2080, we end up with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Moving on to step 11:
237 goes into 1840 7 times with a remainder of 181.
The next digit of our result is 7. 
Result so far: 384871.687
Deduct 1659 from 1840 and we're left with 181.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1810, and continue the process.

Let's proceed to step 12:
1810 divided by 237 is 7 with a remainder of 151.
The next digit of our result is 7. 
Result so far: 384871.6877
The remainder is 151 after subtracting 1659 from 1810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1510, and continue the process.

The final outcome is 384871.6877, with a leftover of 0.00151.