We look at the division of 98090 by 81 
We want to figure out the number of times 98090 can be divided by 81.

On to step 1:
The number 81 fits into 9 0 times, leaving a remainder of 9.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Include the next digit (8) from the dividend after 9, then repeat: 98 / 81

Let's proceed to step 2:
The number 81 fits into 98 1 times, leaving a remainder of 17.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 81 away from 98, we end up with 17.
Grab the next digit (0) from the dividend, add it to 17, then carry on: 170 / 81

Step 3:
170 divided by 81 is 2 with a remainder of 8.
Put 2 as the next digit of the answer. 
Result so far: 12.0
If we subtract 162 from 170, we get 8.
Bring next digit (9) of the dividend behind the 8 and repeat the process: 89 / 81

Advancing to step 4:
When dividing 89 by 81, we get 1 with a remainder of 8.
Put 1 as the next digit of the answer. 
Result so far: 121.0
Subtract 81 from 89 to get 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 81

Let's proceed to step 5:
81 can be fit into 80 0 times, resulting in a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 1210.0
If we subtract 0 from 80, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 6:
When dividing 800 by 81, we get 9 with a remainder of 71.
The number 9 becomes the next digit in our result. 
Result so far: 1210.9
Subtracting 729 from 800 leaves us with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Moving on to step 7:
If we divide 710 by 81, we get 8 and a remainder of 62.
The number 8 becomes the next digit in our result. 
Result so far: 1210.98
Subtract 648 from 710 to get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 8:
When dividing 620 by 81, we get 7 with a remainder of 53.
The number 7 becomes the next digit in our result. 
Result so far: 1210.987
The remainder is 53 after subtracting 567 from 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 9:
The number 81 fits into 530 6 times, leaving a remainder of 44.
Put 6 as the next digit of the answer. 
Result so far: 1210.9876
Deduct 486 from 530 and we're left with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 10:
440 divided by 81 is 5 with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 1210.98765
If we subtract 405 from 440, 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.

Let's proceed to step 11:
81 goes into 350 4 times with a remainder of 26.
Record the quotient 4 as the next digit in the result. 
Result so far: 1210.987654
If we subtract 324 from 350, we get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 12:
If we divide 260 by 81, we get 3 and a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 1210.9876543
Subtract 243 from 260 to get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Step 13:
81 can be fit into 170 2 times, resulting in a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 1210.98765432
The remainder is 8 after subtracting 162 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

The final result is 1210.98765432 with a remainder of 8e-09.