We're dividing 10242 by 84 
We want to figure out the number of times 10242 can be divided by 84.

On to step 1:
1 divided by 84 is 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 84

Advancing to step 2:
84 goes into 10 0 times with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 10 leaves us with 10.
Fetch the next digit (2) from the dividend, attach it to 10 and continue: 102 / 84

Advancing to step 3:
84 goes into 102 1 times with a remainder of 18.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 84 from 102, we get 18.
Fetch the next digit (4) from the dividend, attach it to 18 and continue: 184 / 84

Step 4:
If we divide 184 by 84, we get 2 and a remainder of 16.
Put 2 as the next digit of the answer. 
Result so far: 12.0
Subtract 168 from 184 to get 16.
Include the next digit (2) from the dividend after 16, then repeat: 162 / 84

Going ahead to step 5:
The number 84 fits into 162 1 times, leaving a remainder of 78.
Record the quotient 1 as the next digit in the result. 
Result so far: 121.0
Subtract 84 from 162 to get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Going ahead to step 6:
If we divide 780 by 84, we get 9 and a remainder of 24.
Put 9 as the next digit of the answer. 
Result so far: 121.9
Deduct 756 from 780 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 7:
84 can be fit into 240 2 times, resulting in a remainder of 72.
Write down 2 as next digit of the result. 
Result so far: 121.92
The remainder is 72 after subtracting 168 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Moving on to step 8:
The number 84 fits into 720 8 times, leaving a remainder of 48.
Put 8 as the next digit of the answer. 
Result so far: 121.928
The remainder is 48 after subtracting 672 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Let's proceed to step 9:
When dividing 480 by 84, we get 5 with a remainder of 60.
Use 5 as the next digit of our solution. 
Result so far: 121.9285
Subtract 420 from 480 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 10:
84 goes into 600 7 times with a remainder of 12.
Record the quotient 7 as the next digit in the result. 
Result so far: 121.92857
Deduct 588 from 600 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 11:
120 divided by 84 is 1 with a remainder of 36.
The number 1 becomes the next digit in our result. 
Result so far: 121.928571
Subtract 84 from 120 to get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Step 12:
The number 84 fits into 360 4 times, leaving a remainder of 24.
Record the quotient 4 as the next digit in the result. 
Result so far: 121.9285714
If we take 336 away from 360, we end up with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Going ahead to step 13:
240 divided by 84 is 2 with a remainder of 72.
The next digit of our result is 2. 
Result so far: 121.92857142
Deduct 168 from 240 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Our division results in 121.92857142 with a remaining 7.2e-08.