Let's divide 10542519 by 81
Our goal is to divide 10542519 by 81.

On to step 1:
If we divide 1 by 81, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 81

Going ahead to step 2:
The number 81 fits into 10 0 times, leaving a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 10 to get 10.
Take the next digit (5) from the dividend and append it to 10, then repeat: 105 / 81

Going ahead to step 3:
81 can be fit into 105 1 times, resulting in a remainder of 24.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 81 away from 105, we end up with 24.
Include the next digit (4) from the dividend after 24, then repeat: 244 / 81

Let's proceed to step 4:
When dividing 244 by 81, we get 3 with a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 13.0
The remainder is 1 after subtracting 243 from 244.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 81

Let's proceed to step 5:
The number 81 fits into 12 0 times, leaving a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 130.0
If we subtract 0 from 12, we get 12.
Grab the next digit (5) from the dividend, add it to 12, then carry on: 125 / 81

On to step 6:
When dividing 125 by 81, we get 1 with a remainder of 44.
The next digit of our result is 1. 
Result so far: 1301.0
If we take 81 away from 125, we end up with 44.
Take the next digit (1) from the dividend and append it to 44, then repeat: 441 / 81

On to step 7:
81 can be fit into 441 5 times, resulting in a remainder of 36.
Put 5 as the next digit of the answer. 
Result so far: 13015.0
If we take 405 away from 441, we end up with 36.
Grab the next digit (9) from the dividend, add it to 36, then carry on: 369 / 81

Let's proceed to step 8:
81 goes into 369 4 times with a remainder of 45.
The next digit of our result is 4. 
Result so far: 130154.0
Deduct 324 from 369 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Going ahead to step 9:
450 divided by 81 is 5 with a remainder of 45.
Write down 5 as next digit of the result. 
Result so far: 130154.5
Subtracting 405 from 450 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Step 10:
81 goes into 450 5 times with a remainder of 45.
Put 5 as the next digit of the answer. 
Result so far: 130154.55
Deduct 405 from 450 and we're left with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

After the division, we end up with 130154.55 and a remainder of 0.045.