87403749 ÷ 815 
Let's see how many times 815 fits into 87403749.

Going ahead to step 1:
815 can be fit into 8 0 times, resulting in a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 815

Let's proceed to step 2:
815 can be fit into 87 0 times, resulting in a remainder of 87.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 87, we get 87.
Fetch the next digit (4) from the dividend, attach it to 87 and continue: 874 / 815

Advancing to step 3:
874 divided by 815 is 1 with a remainder of 59.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 815 from 874, we get 59.
Bring next digit (0) of the dividend behind the 59 and repeat the process: 590 / 815

Moving on to step 4:
590 divided by 815 is 0 with a remainder of 590.
Write down 0 as next digit of the result. 
Result so far: 10.0
The remainder is 590 after subtracting 0 from 590.
Include the next digit (3) from the dividend after 590, then repeat: 5903 / 815

On to step 5:
815 goes into 5903 7 times with a remainder of 198.
Write down 7 as next digit of the result. 
Result so far: 107.0
The remainder is 198 after subtracting 5705 from 5903.
Fetch the next digit (7) from the dividend, attach it to 198 and continue: 1987 / 815

Moving on to step 6:
The number 815 fits into 1987 2 times, leaving a remainder of 357.
Put 2 as the next digit of the answer. 
Result so far: 1072.0
Subtract 1630 from 1987 to get 357.
Append the next digit (4) from the dividend to 357 and continue with: 3574 / 815

Advancing to step 7:
If we divide 3574 by 815, we get 4 and a remainder of 314.
The next digit of our result is 4. 
Result so far: 10724.0
If we subtract 3260 from 3574, we get 314.
Include the next digit (9) from the dividend after 314, then repeat: 3149 / 815

On to step 8:
The number 815 fits into 3149 3 times, leaving a remainder of 704.
Put 3 as the next digit of the answer. 
Result so far: 107243.0
Subtract 2445 from 3149 to get 704.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7040, and continue the process.

Advancing to step 9:
The number 815 fits into 7040 8 times, leaving a remainder of 520.
The next digit of our result is 8. 
Result so far: 107243.8
If we subtract 6520 from 7040, we get 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Going ahead to step 10:
When dividing 5200 by 815, we get 6 with a remainder of 310.
Record the quotient 6 as the next digit in the result. 
Result so far: 107243.86
Subtract 4890 from 5200 to get 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Advancing to step 11:
815 goes into 3100 3 times with a remainder of 655.
Record the quotient 3 as the next digit in the result. 
Result so far: 107243.863
The remainder is 655 after subtracting 2445 from 3100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6550, and continue the process.

Going ahead to step 12:
If we divide 6550 by 815, we get 8 and a remainder of 30.
The next digit of our result is 8. 
Result so far: 107243.8638
The remainder is 30 after subtracting 6520 from 6550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 13:
815 goes into 300 0 times with a remainder of 300.
The next digit of our result is 0. 
Result so far: 107243.8638
Subtract 0 from 300 to get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Step 14:
If we divide 3000 by 815, we get 3 and a remainder of 555.
The next digit of our result is 3. 
Result so far: 107243.863803
The remainder is 555 after subtracting 2445 from 3000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5550, and continue the process.

Step 15:
If we divide 5550 by 815, we get 6 and a remainder of 660.
Record the quotient 6 as the next digit in the result. 
Result so far: 107243.8638036
If we subtract 4890 from 5550, we get 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

Advancing to step 16:
6600 divided by 815 is 8 with a remainder of 80.
The next digit of our result is 8. 
Result so far: 107243.86380368
The remainder is 80 after subtracting 6520 from 6600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The final result is 107243.86380368 with a remainder of 8e-08.