We look at the division of 166590 by 91 
We want to divide 166590 by 91.

Let's proceed to step 1:
1 divided by 91 is 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 91

Moving on to step 2:
91 can be fit into 16 0 times, resulting in a remainder of 16.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 16 and we're left with 16.
Grab the next digit (6) from the dividend, add it to 16, then carry on: 166 / 91

Advancing to step 3:
The number 91 fits into 166 1 times, leaving a remainder of 75.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 91 from 166 to get 75.
Bring next digit (5) of the dividend behind the 75 and repeat the process: 755 / 91

Going ahead to step 4:
When dividing 755 by 91, we get 8 with a remainder of 27.
The next digit of our result is 8. 
Result so far: 18.0
If we take 728 away from 755, we end up with 27.
Take the next digit (9) from the dividend and append it to 27, then repeat: 279 / 91

Going ahead to step 5:
When dividing 279 by 91, we get 3 with a remainder of 6.
Use 3 as the next digit of our solution. 
Result so far: 183.0
If we take 273 away from 279, we end up with 6.
Fetch the next digit (0) from the dividend, attach it to 6 and continue: 60 / 91

Moving on to step 6:
The number 91 fits into 60 0 times, leaving a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 1830.0
Deduct 0 from 60 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 7:
91 goes into 600 6 times with a remainder of 54.
Write down 6 as next digit of the result. 
Result so far: 1830.6
The remainder is 54 after subtracting 546 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

On to step 8:
540 divided by 91 is 5 with a remainder of 85.
The next digit of our result is 5. 
Result so far: 1830.65
The remainder is 85 after subtracting 455 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Advancing to step 9:
850 divided by 91 is 9 with a remainder of 31.
Write down 9 as next digit of the result. 
Result so far: 1830.659
The remainder is 31 after subtracting 819 from 850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 10:
310 divided by 91 is 3 with a remainder of 37.
The number 3 becomes the next digit in our result. 
Result so far: 1830.6593
If we take 273 away from 310, we end up with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Advancing to step 11:
The number 91 fits into 370 4 times, leaving a remainder of 6.
Put 4 as the next digit of the answer. 
Result so far: 1830.65934
The remainder is 6 after subtracting 364 from 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 12:
91 goes into 60 0 times with a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 1830.65934
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 13:
If we divide 600 by 91, we get 6 and a remainder of 54.
The next digit of our result is 6. 
Result so far: 1830.6593406
Deduct 546 from 600 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Moving on to step 14:
540 divided by 91 is 5 with a remainder of 85.
The next digit of our result is 5. 
Result so far: 1830.65934065
Subtracting 455 from 540 leaves us with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

In conclusion, the division gives 1830.65934065 with a balance of 8.5e-08.