We're dividing 21646253 by 102 
We want to divide 21646253 by 102.

On to step 1:
102 goes into 2 0 times with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 102

On to step 2:
21 divided by 102 is 0 with a remainder of 21.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Fetch the next digit (6) from the dividend, attach it to 21 and continue: 216 / 102

Moving on to step 3:
102 goes into 216 2 times with a remainder of 12.
The next digit of our result is 2. 
Result so far: 2.0
If we take 204 away from 216, we end up with 12.
Bring next digit (4) of the dividend behind the 12 and repeat the process: 124 / 102

Advancing to step 4:
When dividing 124 by 102, we get 1 with a remainder of 22.
Record the quotient 1 as the next digit in the result. 
Result so far: 21.0
Subtract 102 from 124 to get 22.
Grab the next digit (6) from the dividend, add it to 22, then carry on: 226 / 102

Moving on to step 5:
The number 102 fits into 226 2 times, leaving a remainder of 22.
Write down 2 as next digit of the result. 
Result so far: 212.0
Deduct 204 from 226 and we're left with 22.
Take the next digit (2) from the dividend and append it to 22, then repeat: 222 / 102

Advancing to step 6:
102 can be fit into 222 2 times, resulting in a remainder of 18.
The next digit of our result is 2. 
Result so far: 2122.0
If we take 204 away from 222, we end up with 18.
Append the next digit (5) from the dividend to 18 and continue with: 185 / 102

Step 7:
102 can be fit into 185 1 times, resulting in a remainder of 83.
The next digit of our result is 1. 
Result so far: 21221.0
If we take 102 away from 185, we end up with 83.
Bring next digit (3) of the dividend behind the 83 and repeat the process: 833 / 102

Going ahead to step 8:
If we divide 833 by 102, we get 8 and a remainder of 17.
The next digit of our result is 8. 
Result so far: 212218.0
Subtract 816 from 833 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.

Going ahead to step 9:
170 divided by 102 is 1 with a remainder of 68.
The number 1 becomes the next digit in our result. 
Result so far: 212218.1
Deduct 102 from 170 and we're left with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Step 10:
The number 102 fits into 680 6 times, leaving a remainder of 68.
The number 6 becomes the next digit in our result. 
Result so far: 212218.16
If we take 612 away from 680, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Advancing to step 11:
When dividing 680 by 102, we get 6 with a remainder of 68.
Record the quotient 6 as the next digit in the result. 
Result so far: 212218.166
Subtract 612 from 680 to get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Our division results in 212218.166 with a remaining 0.0068.