We're dividing 121283 by 51 
We want to figure out the number of times 121283 can be divided by 51.

Going ahead to step 1:
When dividing 1 by 51, we get 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 51

On to step 2:
12 divided by 51 is 0 with a remainder of 12.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 12 to get 12.
Grab the next digit (1) from the dividend, add it to 12, then carry on: 121 / 51

On to step 3:
If we divide 121 by 51, we get 2 and a remainder of 19.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 102 from 121 and we're left with 19.
Take the next digit (2) from the dividend and append it to 19, then repeat: 192 / 51

Moving on to step 4:
192 divided by 51 is 3 with a remainder of 39.
Put 3 as the next digit of the answer. 
Result so far: 23.0
Deduct 153 from 192 and we're left with 39.
Append the next digit (8) from the dividend to 39 and continue with: 398 / 51

Advancing to step 5:
398 divided by 51 is 7 with a remainder of 41.
Use 7 as the next digit of our solution. 
Result so far: 237.0
Subtracting 357 from 398 leaves us with 41.
Append the next digit (3) from the dividend to 41 and continue with: 413 / 51

Moving on to step 6:
413 divided by 51 is 8 with a remainder of 5.
Record the quotient 8 as the next digit in the result. 
Result so far: 2378.0
Subtract 408 from 413 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 7:
51 goes into 50 0 times with a remainder of 50.
The number 0 becomes the next digit in our result. 
Result so far: 2378.0
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 8:
500 divided by 51 is 9 with a remainder of 41.
Record the quotient 9 as the next digit in the result. 
Result so far: 2378.09
The remainder is 41 after subtracting 459 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Let's proceed to step 9:
If we divide 410 by 51, we get 8 and a remainder of 2.
Write down 8 as next digit of the result. 
Result so far: 2378.098
Subtract 408 from 410 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.

Going ahead to step 10:
51 goes into 20 0 times with a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 2378.098
Deduct 0 from 20 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 11:
When dividing 200 by 51, we get 3 with a remainder of 47.
Put 3 as the next digit of the answer. 
Result so far: 2378.09803
If we take 153 away from 200, we end up 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.

Moving on to step 12:
When dividing 470 by 51, we get 9 with a remainder of 11.
Write down 9 as next digit of the result. 
Result so far: 2378.098039
If we subtract 459 from 470, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Going ahead to step 13:
If we divide 110 by 51, we get 2 and a remainder of 8.
The next digit of our result is 2. 
Result so far: 2378.0980392
Deduct 102 from 110 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 14:
When dividing 80 by 51, we get 1 with a remainder of 29.
Write down 1 as next digit of the result. 
Result so far: 2378.09803921
Subtracting 51 from 80 leaves us with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Our division results in 2378.09803921 with a remaining 2.9e-08.