81240087 ÷ 428 
Our goal is to divide 81240087 by 428.

Moving on to step 1:
428 can be fit into 8 0 times, resulting in a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (1) from the dividend and append it to 8, then repeat: 81 / 428

Let's proceed to step 2:
The number 428 fits into 81 0 times, leaving a remainder of 81.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 81 after subtracting 0 from 81.
Include the next digit (2) from the dividend after 81, then repeat: 812 / 428

Going ahead to step 3:
428 can be fit into 812 1 times, resulting in a remainder of 384.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 428 from 812 and we're left with 384.
Grab the next digit (4) from the dividend, add it to 384, then carry on: 3844 / 428

Step 4:
If we divide 3844 by 428, we get 8 and a remainder of 420.
Write down 8 as next digit of the result. 
Result so far: 18.0
If we take 3424 away from 3844, we end up with 420.
Take the next digit (0) from the dividend and append it to 420, then repeat: 4200 / 428

Step 5:
When dividing 4200 by 428, we get 9 with a remainder of 348.
The number 9 becomes the next digit in our result. 
Result so far: 189.0
The remainder is 348 after subtracting 3852 from 4200.
Fetch the next digit (0) from the dividend, attach it to 348 and continue: 3480 / 428

Going ahead to step 6:
428 goes into 3480 8 times with a remainder of 56.
Use 8 as the next digit of our solution. 
Result so far: 1898.0
Deduct 3424 from 3480 and we're left with 56.
Fetch the next digit (8) from the dividend, attach it to 56 and continue: 568 / 428

Moving on to step 7:
428 goes into 568 1 times with a remainder of 140.
Write down 1 as next digit of the result. 
Result so far: 18981.0
If we take 428 away from 568, we end up with 140.
Bring next digit (7) of the dividend behind the 140 and repeat the process: 1407 / 428

Advancing to step 8:
428 goes into 1407 3 times with a remainder of 123.
Write down 3 as next digit of the result. 
Result so far: 189813.0
If we take 1284 away from 1407, we end up with 123.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1230, and continue the process.

Advancing to step 9:
428 goes into 1230 2 times with a remainder of 374.
Use 2 as the next digit of our solution. 
Result so far: 189813.2
If we subtract 856 from 1230, we get 374.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3740, and continue the process.

Advancing to step 10:
3740 divided by 428 is 8 with a remainder of 316.
Put 8 as the next digit of the answer. 
Result so far: 189813.28
Subtracting 3424 from 3740 leaves us with 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Step 11:
When dividing 3160 by 428, we get 7 with a remainder of 164.
Record the quotient 7 as the next digit in the result. 
Result so far: 189813.287
Subtracting 2996 from 3160 leaves us with 164.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1640, and continue the process.

Advancing to step 12:
428 goes into 1640 3 times with a remainder of 356.
The number 3 becomes the next digit in our result. 
Result so far: 189813.2873
Subtract 1284 from 1640 to get 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

Going ahead to step 13:
3560 divided by 428 is 8 with a remainder of 136.
The next digit of our result is 8. 
Result so far: 189813.28738
Subtracting 3424 from 3560 leaves us with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Going ahead to step 14:
428 can be fit into 1360 3 times, resulting in a remainder of 76.
The next digit of our result is 3. 
Result so far: 189813.287383
Deduct 1284 from 1360 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 15:
428 goes into 760 1 times with a remainder of 332.
Write down 1 as next digit of the result. 
Result so far: 189813.2873831
The remainder is 332 after subtracting 428 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3320, and continue the process.

Let's proceed to step 16:
428 goes into 3320 7 times with a remainder of 324.
Write down 7 as next digit of the result. 
Result so far: 189813.28738317
Subtract 2996 from 3320 to get 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

The quotient of the division is 189813.28738317, and the remainder is 3.24e-07.