121288 ÷ 91 
We want to figure out the number of times 121288 can be divided by 91.

Moving on to step 1:
When dividing 1 by 91, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 91

Moving on to step 2:
The number 91 fits into 12 0 times, leaving a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Bring next digit (1) of the dividend behind the 12 and repeat the process: 121 / 91

Moving on to step 3:
If we divide 121 by 91, we get 1 and a remainder of 30.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 91 from 121, we get 30.
Fetch the next digit (2) from the dividend, attach it to 30 and continue: 302 / 91

Step 4:
The number 91 fits into 302 3 times, leaving a remainder of 29.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
Deduct 273 from 302 and we're left with 29.
Grab the next digit (8) from the dividend, add it to 29, then carry on: 298 / 91

Step 5:
The number 91 fits into 298 3 times, leaving a remainder of 25.
The number 3 becomes the next digit in our result. 
Result so far: 133.0
If we take 273 away from 298, we end up with 25.
Grab the next digit (8) from the dividend, add it to 25, then carry on: 258 / 91

Going ahead to step 6:
91 can be fit into 258 2 times, resulting in a remainder of 76.
Put 2 as the next digit of the answer. 
Result so far: 1332.0
Deduct 182 from 258 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Moving on to step 7:
If we divide 760 by 91, we get 8 and a remainder of 32.
Write down 8 as next digit of the result. 
Result so far: 1332.8
Deduct 728 from 760 and we're left with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 8:
91 can be fit into 320 3 times, resulting in a remainder of 47.
Use 3 as the next digit of our solution. 
Result so far: 1332.83
Deduct 273 from 320 and we're left with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Going ahead to step 9:
The number 91 fits into 470 5 times, leaving a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 1332.835
The remainder is 15 after subtracting 455 from 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 10:
The number 91 fits into 150 1 times, leaving a remainder of 59.
The number 1 becomes the next digit in our result. 
Result so far: 1332.8351
Subtract 91 from 150 to get 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Let's proceed to step 11:
91 goes into 590 6 times with a remainder of 44.
The next digit of our result is 6. 
Result so far: 1332.83516
If we take 546 away from 590, we end up 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.

Step 12:
440 divided by 91 is 4 with a remainder of 76.
The next digit of our result is 4. 
Result so far: 1332.835164
Subtracting 364 from 440 leaves us with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Moving on to step 13:
When dividing 760 by 91, we get 8 with a remainder of 32.
Put 8 as the next digit of the answer. 
Result so far: 1332.8351648
The remainder is 32 after subtracting 728 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 14:
When dividing 320 by 91, we get 3 with a remainder of 47.
Use 3 as the next digit of our solution. 
Result so far: 1332.83516483
If we subtract 273 from 320, we get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

After the division, we end up with 1332.83516483 and a remainder of 4.7e-08.