42252162 ÷ 243 
The aim is to understand the frequency of 243 in 42252162.

Step 1:
If we divide 4 by 243, we get 0 and a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 243

Moving on to step 2:
When dividing 42 by 243, we get 0 with a remainder of 42.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 42, we get 42.
Fetch the next digit (2) from the dividend, attach it to 42 and continue: 422 / 243

Moving on to step 3:
243 goes into 422 1 times with a remainder of 179.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 243 from 422 and we're left with 179.
Append the next digit (5) from the dividend to 179 and continue with: 1795 / 243

Going ahead to step 4:
If we divide 1795 by 243, we get 7 and a remainder of 94.
The next digit of our result is 7. 
Result so far: 17.0
If we take 1701 away from 1795, we end up with 94.
Take the next digit (2) from the dividend and append it to 94, then repeat: 942 / 243

Let's proceed to step 5:
243 can be fit into 942 3 times, resulting in a remainder of 213.
The number 3 becomes the next digit in our result. 
Result so far: 173.0
The remainder is 213 after subtracting 729 from 942.
Grab the next digit (1) from the dividend, add it to 213, then carry on: 2131 / 243

Advancing to step 6:
243 can be fit into 2131 8 times, resulting in a remainder of 187.
Put 8 as the next digit of the answer. 
Result so far: 1738.0
The remainder is 187 after subtracting 1944 from 2131.
Take the next digit (6) from the dividend and append it to 187, then repeat: 1876 / 243

Let's proceed to step 7:
The number 243 fits into 1876 7 times, leaving a remainder of 175.
Record the quotient 7 as the next digit in the result. 
Result so far: 17387.0
If we take 1701 away from 1876, we end up with 175.
Include the next digit (2) from the dividend after 175, then repeat: 1752 / 243

Let's proceed to step 8:
If we divide 1752 by 243, we get 7 and a remainder of 51.
Put 7 as the next digit of the answer. 
Result so far: 173877.0
If we take 1701 away from 1752, we end up with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Advancing to step 9:
243 goes into 510 2 times with a remainder of 24.
The next digit of our result is 2. 
Result so far: 173877.2
The remainder is 24 after subtracting 486 from 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 10:
243 goes into 240 0 times with a remainder of 240.
Record the quotient 0 as the next digit in the result. 
Result so far: 173877.2
Deduct 0 from 240 and we're left with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Going ahead to step 11:
If we divide 2400 by 243, we get 9 and a remainder of 213.
The number 9 becomes the next digit in our result. 
Result so far: 173877.209
Subtracting 2187 from 2400 leaves us with 213.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2130, and continue the process.

Advancing to step 12:
If we divide 2130 by 243, we get 8 and a remainder of 186.
Use 8 as the next digit of our solution. 
Result so far: 173877.2098
Subtract 1944 from 2130 to get 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

Step 13:
If we divide 1860 by 243, we get 7 and a remainder of 159.
Write down 7 as next digit of the result. 
Result so far: 173877.20987
If we subtract 1701 from 1860, we get 159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

Step 14:
If we divide 1590 by 243, we get 6 and a remainder of 132.
Use 6 as the next digit of our solution. 
Result so far: 173877.209876
Subtract 1458 from 1590 to get 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Step 15:
243 goes into 1320 5 times with a remainder of 105.
The number 5 becomes the next digit in our result. 
Result so far: 173877.2098765
The remainder is 105 after subtracting 1215 from 1320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Step 16:
When dividing 1050 by 243, we get 4 with a remainder of 78.
Put 4 as the next digit of the answer. 
Result so far: 173877.20987654
Subtract 972 from 1050 to get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

The quotient of the division is 173877.20987654, and the remainder is 7.8e-08.