120009 ÷ 91 
We want to figure out the number of times 120009 can be divided by 91.

Advancing to step 1:
When dividing 1 by 91, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 91

Step 2:
When dividing 12 by 91, we get 0 with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Fetch the next digit (0) from the dividend, attach it to 12 and continue: 120 / 91

On to step 3:
91 goes into 120 1 times with a remainder of 29.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 91 from 120, we get 29.
Take the next digit (0) from the dividend and append it to 29, then repeat: 290 / 91

Step 4:
91 goes into 290 3 times with a remainder of 17.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Deduct 273 from 290 and we're left with 17.
Append the next digit (0) from the dividend to 17 and continue with: 170 / 91

Moving on to step 5:
170 divided by 91 is 1 with a remainder of 79.
Put 1 as the next digit of the answer. 
Result so far: 131.0
If we subtract 91 from 170, we get 79.
Fetch the next digit (9) from the dividend, attach it to 79 and continue: 799 / 91

Advancing to step 6:
91 can be fit into 799 8 times, resulting in a remainder of 71.
Use 8 as the next digit of our solution. 
Result so far: 1318.0
If we take 728 away from 799, we end up 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.

Step 7:
710 divided by 91 is 7 with a remainder of 73.
Put 7 as the next digit of the answer. 
Result so far: 1318.7
Subtract 637 from 710 to get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Going ahead to step 8:
91 can be fit into 730 8 times, resulting in a remainder of 2.
Put 8 as the next digit of the answer. 
Result so far: 1318.78
If we subtract 728 from 730, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

On to step 9:
If we divide 20 by 91, we get 0 and a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 1318.78
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 10:
The number 91 fits into 200 2 times, leaving a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 1318.7802
Subtract 182 from 200 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 11:
91 goes into 180 1 times with a remainder of 89.
Put 1 as the next digit of the answer. 
Result so far: 1318.78021
The remainder is 89 after subtracting 91 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Step 12:
91 goes into 890 9 times with a remainder of 71.
Record the quotient 9 as the next digit in the result. 
Result so far: 1318.780219
Subtract 819 from 890 to get 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Going ahead to step 13:
91 goes into 710 7 times with a remainder of 73.
Put 7 as the next digit of the answer. 
Result so far: 1318.7802197
If we subtract 637 from 710, we get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Advancing to step 14:
91 goes into 730 8 times with a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 1318.78021978
Subtract 728 from 730 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

After the division, we end up with 1318.78021978 and a remainder of 2e-09.