Let's divide 121458 by 85
We want to figure out the number of times 121458 can be divided by 85.

Going ahead to step 1:
When dividing 1 by 85, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 85

Going ahead to step 2:
12 divided by 85 is 0 with a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Grab the next digit (1) from the dividend, add it to 12, then carry on: 121 / 85

On to step 3:
85 can be fit into 121 1 times, resulting in a remainder of 36.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 85 from 121 leaves us with 36.
Grab the next digit (4) from the dividend, add it to 36, then carry on: 364 / 85

Advancing to step 4:
364 divided by 85 is 4 with a remainder of 24.
Put 4 as the next digit of the answer. 
Result so far: 14.0
Subtracting 340 from 364 leaves us with 24.
Bring next digit (5) of the dividend behind the 24 and repeat the process: 245 / 85

Going ahead to step 5:
245 divided by 85 is 2 with a remainder of 75.
Write down 2 as next digit of the result. 
Result so far: 142.0
The remainder is 75 after subtracting 170 from 245.
Bring next digit (8) of the dividend behind the 75 and repeat the process: 758 / 85

Going ahead to step 6:
If we divide 758 by 85, we get 8 and a remainder of 78.
The number 8 becomes the next digit in our result. 
Result so far: 1428.0
The remainder is 78 after subtracting 680 from 758.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Let's proceed to step 7:
The number 85 fits into 780 9 times, leaving a remainder of 15.
Use 9 as the next digit of our solution. 
Result so far: 1428.9
If we take 765 away from 780, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Advancing to step 8:
If we divide 150 by 85, we get 1 and a remainder of 65.
Write down 1 as next digit of the result. 
Result so far: 1428.91
If we take 85 away from 150, we end up with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

On to step 9:
85 can be fit into 650 7 times, resulting in a remainder of 55.
The number 7 becomes the next digit in our result. 
Result so far: 1428.917
Subtract 595 from 650 to get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Step 10:
550 divided by 85 is 6 with a remainder of 40.
Use 6 as the next digit of our solution. 
Result so far: 1428.9176
The remainder is 40 after subtracting 510 from 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 11:
The number 85 fits into 400 4 times, leaving a remainder of 60.
Record the quotient 4 as the next digit in the result. 
Result so far: 1428.91764
The remainder is 60 after subtracting 340 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 12:
The number 85 fits into 600 7 times, leaving a remainder of 5.
The number 7 becomes the next digit in our result. 
Result so far: 1428.917647
Subtracting 595 from 600 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 13:
If we divide 50 by 85, we get 0 and a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 1428.917647
Subtracting 0 from 50 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 14:
85 goes into 500 5 times with a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 1428.91764705
Subtracting 425 from 500 leaves us with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

The final result is 1428.91764705 with a remainder of 7.5e-08.