We're dividing 81206821 by 142 
We're looking to find how many times 142 goes into 81206821.

Step 1:
8 divided by 142 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 142

Moving on to step 2:
142 goes into 81 0 times with a remainder of 81.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 81, we get 81.
Append the next digit (2) from the dividend to 81 and continue with: 812 / 142

On to step 3:
142 goes into 812 5 times with a remainder of 102.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we take 710 away from 812, we end up with 102.
Grab the next digit (0) from the dividend, add it to 102, then carry on: 1020 / 142

On to step 4:
142 goes into 1020 7 times with a remainder of 26.
Use 7 as the next digit of our solution. 
Result so far: 57.0
The remainder is 26 after subtracting 994 from 1020.
Grab the next digit (6) from the dividend, add it to 26, then carry on: 266 / 142

Let's proceed to step 5:
142 goes into 266 1 times with a remainder of 124.
Record the quotient 1 as the next digit in the result. 
Result so far: 571.0
Subtract 142 from 266 to get 124.
Fetch the next digit (8) from the dividend, attach it to 124 and continue: 1248 / 142

On to step 6:
142 goes into 1248 8 times with a remainder of 112.
Use 8 as the next digit of our solution. 
Result so far: 5718.0
Deduct 1136 from 1248 and we're left with 112.
Take the next digit (2) from the dividend and append it to 112, then repeat: 1122 / 142

Going ahead to step 7:
The number 142 fits into 1122 7 times, leaving a remainder of 128.
Put 7 as the next digit of the answer. 
Result so far: 57187.0
Deduct 994 from 1122 and we're left with 128.
Include the next digit (1) from the dividend after 128, then repeat: 1281 / 142

Moving on to step 8:
The number 142 fits into 1281 9 times, leaving a remainder of 3.
The number 9 becomes the next digit in our result. 
Result so far: 571879.0
The remainder is 3 after subtracting 1278 from 1281.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 9:
30 divided by 142 is 0 with a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 571879.0
Deduct 0 from 30 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 10:
When dividing 300 by 142, we get 2 with a remainder of 16.
Put 2 as the next digit of the answer. 
Result so far: 571879.02
The remainder is 16 after subtracting 284 from 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 11:
If we divide 160 by 142, we get 1 and a remainder of 18.
Put 1 as the next digit of the answer. 
Result so far: 571879.021
The remainder is 18 after subtracting 142 from 160.
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 12:
180 divided by 142 is 1 with a remainder of 38.
Put 1 as the next digit of the answer. 
Result so far: 571879.0211
Subtracting 142 from 180 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Our division results in 571879.0211 with a remaining 0.00038.