We look at the division of 42992715 by 815 
We want to figure out the number of times 42992715 can be divided by 815.

On to step 1:
The number 815 fits into 4 0 times, leaving a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 4, we end up with 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 815

Advancing to step 2:
The number 815 fits into 42 0 times, leaving a remainder of 42.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 42 and we're left with 42.
Fetch the next digit (9) from the dividend, attach it to 42 and continue: 429 / 815

On to step 3:
815 can be fit into 429 0 times, resulting in a remainder of 429.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 429, we end up with 429.
Append the next digit (9) from the dividend to 429 and continue with: 4299 / 815

Advancing to step 4:
If we divide 4299 by 815, we get 5 and a remainder of 224.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Subtracting 4075 from 4299 leaves us with 224.
Bring next digit (2) of the dividend behind the 224 and repeat the process: 2242 / 815

Going ahead to step 5:
815 can be fit into 2242 2 times, resulting in a remainder of 612.
Put 2 as the next digit of the answer. 
Result so far: 52.0
Subtract 1630 from 2242 to get 612.
Fetch the next digit (7) from the dividend, attach it to 612 and continue: 6127 / 815

Let's proceed to step 6:
When dividing 6127 by 815, we get 7 with a remainder of 422.
The number 7 becomes the next digit in our result. 
Result so far: 527.0
If we take 5705 away from 6127, we end up with 422.
Fetch the next digit (1) from the dividend, attach it to 422 and continue: 4221 / 815

Moving on to step 7:
The number 815 fits into 4221 5 times, leaving a remainder of 146.
Record the quotient 5 as the next digit in the result. 
Result so far: 5275.0
Subtract 4075 from 4221 to get 146.
Fetch the next digit (5) from the dividend, attach it to 146 and continue: 1465 / 815

On to step 8:
If we divide 1465 by 815, we get 1 and a remainder of 650.
The number 1 becomes the next digit in our result. 
Result so far: 52751.0
If we take 815 away from 1465, we end up with 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

On to step 9:
6500 divided by 815 is 7 with a remainder of 795.
Write down 7 as next digit of the result. 
Result so far: 52751.7
Deduct 5705 from 6500 and we're left with 795.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7950, and continue the process.

Advancing to step 10:
If we divide 7950 by 815, we get 9 and a remainder of 615.
Record the quotient 9 as the next digit in the result. 
Result so far: 52751.79
If we take 7335 away from 7950, we end up with 615.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6150, and continue the process.

Advancing to step 11:
The number 815 fits into 6150 7 times, leaving a remainder of 445.
Put 7 as the next digit of the answer. 
Result so far: 52751.797
If we take 5705 away from 6150, we end up with 445.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4450, and continue the process.

Step 12:
815 goes into 4450 5 times with a remainder of 375.
The next digit of our result is 5. 
Result so far: 52751.7975
If we take 4075 away from 4450, we end up with 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

On to step 13:
The number 815 fits into 3750 4 times, leaving a remainder of 490.
Record the quotient 4 as the next digit in the result. 
Result so far: 52751.79754
The remainder is 490 after subtracting 3260 from 3750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

Step 14:
815 goes into 4900 6 times with a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 52751.797546
If we subtract 4890 from 4900, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 15:
The number 815 fits into 100 0 times, leaving a remainder of 100.
Put 0 as the next digit of the answer. 
Result so far: 52751.797546
If we subtract 0 from 100, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Step 16:
1000 divided by 815 is 1 with a remainder of 185.
Record the quotient 1 as the next digit in the result. 
Result so far: 52751.79754601
Deduct 815 from 1000 and we're left with 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

After the division, we end up with 52751.79754601 and a remainder of 1.85e-07.