We divide 42157718 by 808
The aim is to understand the frequency of 808 in 42157718.

Step 1:
4 divided by 808 is 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
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 / 808

Moving on to step 2:
When dividing 42 by 808, we get 0 with a remainder of 42.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 42, we end up with 42.
Fetch the next digit (1) from the dividend, attach it to 42 and continue: 421 / 808

Let's proceed to step 3:
If we divide 421 by 808, we get 0 and a remainder of 421.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 421 to get 421.
Fetch the next digit (5) from the dividend, attach it to 421 and continue: 4215 / 808

Let's proceed to step 4:
808 goes into 4215 5 times with a remainder of 175.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we take 4040 away from 4215, we end up with 175.
Include the next digit (7) from the dividend after 175, then repeat: 1757 / 808

Let's proceed to step 5:
1757 divided by 808 is 2 with a remainder of 141.
Write down 2 as next digit of the result. 
Result so far: 52.0
The remainder is 141 after subtracting 1616 from 1757.
Include the next digit (7) from the dividend after 141, then repeat: 1417 / 808

Moving on to step 6:
If we divide 1417 by 808, we get 1 and a remainder of 609.
Put 1 as the next digit of the answer. 
Result so far: 521.0
Subtracting 808 from 1417 leaves us with 609.
Append the next digit (1) from the dividend to 609 and continue with: 6091 / 808

Advancing to step 7:
808 can be fit into 6091 7 times, resulting in a remainder of 435.
Write down 7 as next digit of the result. 
Result so far: 5217.0
The remainder is 435 after subtracting 5656 from 6091.
Take the next digit (8) from the dividend and append it to 435, then repeat: 4358 / 808

Advancing to step 8:
808 goes into 4358 5 times with a remainder of 318.
Use 5 as the next digit of our solution. 
Result so far: 52175.0
Subtracting 4040 from 4358 leaves us with 318.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3180, and continue the process.

Step 9:
If we divide 3180 by 808, we get 3 and a remainder of 756.
The next digit of our result is 3. 
Result so far: 52175.3
Subtract 2424 from 3180 to get 756.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7560, and continue the process.

Going ahead to step 10:
If we divide 7560 by 808, we get 9 and a remainder of 288.
Write down 9 as next digit of the result. 
Result so far: 52175.39
Subtract 7272 from 7560 to get 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

On to step 11:
The number 808 fits into 2880 3 times, leaving a remainder of 456.
Put 3 as the next digit of the answer. 
Result so far: 52175.393
Deduct 2424 from 2880 and we're left with 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Moving on to step 12:
The number 808 fits into 4560 5 times, leaving a remainder of 520.
Record the quotient 5 as the next digit in the result. 
Result so far: 52175.3935
Subtracting 4040 from 4560 leaves us with 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Step 13:
808 goes into 5200 6 times with a remainder of 352.
Put 6 as the next digit of the answer. 
Result so far: 52175.39356
If we subtract 4848 from 5200, we get 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Moving on to step 14:
3520 divided by 808 is 4 with a remainder of 288.
Put 4 as the next digit of the answer. 
Result so far: 52175.393564
If we take 3232 away from 3520, we end up with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

On to step 15:
When dividing 2880 by 808, we get 3 with a remainder of 456.
The number 3 becomes the next digit in our result. 
Result so far: 52175.3935643
The remainder is 456 after subtracting 2424 from 2880.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Going ahead to step 16:
If we divide 4560 by 808, we get 5 and a remainder of 520.
Record the quotient 5 as the next digit in the result. 
Result so far: 52175.39356435
Subtracting 4040 from 4560 leaves us with 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

The quotient of the division is 52175.39356435, and the remainder is 5.2e-07.