We look at the division of 72948240 by 354 
The aim is to understand the frequency of 354 in 72948240.

Let's proceed to step 1:
7 divided by 354 is 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 354

Step 2:
354 goes into 72 0 times with a remainder of 72.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 72 after subtracting 0 from 72.
Append the next digit (9) from the dividend to 72 and continue with: 729 / 354

Moving on to step 3:
354 goes into 729 2 times with a remainder of 21.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 708 away from 729, we end up with 21.
Include the next digit (4) from the dividend after 21, then repeat: 214 / 354

Going ahead to step 4:
354 can be fit into 214 0 times, resulting in a remainder of 214.
Use 0 as the next digit of our solution. 
Result so far: 20.0
The remainder is 214 after subtracting 0 from 214.
Grab the next digit (8) from the dividend, add it to 214, then carry on: 2148 / 354

Step 5:
If we divide 2148 by 354, we get 6 and a remainder of 24.
The number 6 becomes the next digit in our result. 
Result so far: 206.0
Subtracting 2124 from 2148 leaves us with 24.
Bring next digit (2) of the dividend behind the 24 and repeat the process: 242 / 354

Moving on to step 6:
When dividing 242 by 354, we get 0 with a remainder of 242.
The next digit of our result is 0. 
Result so far: 2060.0
Deduct 0 from 242 and we're left with 242.
Append the next digit (4) from the dividend to 242 and continue with: 2424 / 354

Going ahead to step 7:
354 can be fit into 2424 6 times, resulting in a remainder of 300.
The next digit of our result is 6. 
Result so far: 20606.0
Subtracting 2124 from 2424 leaves us with 300.
Take the next digit (0) from the dividend and append it to 300, then repeat: 3000 / 354

Moving on to step 8:
354 goes into 3000 8 times with a remainder of 168.
Record the quotient 8 as the next digit in the result. 
Result so far: 206068.0
Subtracting 2832 from 3000 leaves us with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

On to step 9:
354 goes into 1680 4 times with a remainder of 264.
Write down 4 as next digit of the result. 
Result so far: 206068.4
Subtract 1416 from 1680 to get 264.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2640, and continue the process.

Step 10:
If we divide 2640 by 354, we get 7 and a remainder of 162.
Use 7 as the next digit of our solution. 
Result so far: 206068.47
If we subtract 2478 from 2640, we get 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Going ahead to step 11:
The number 354 fits into 1620 4 times, leaving a remainder of 204.
Write down 4 as next digit of the result. 
Result so far: 206068.474
Deduct 1416 from 1620 and we're left with 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Going ahead to step 12:
When dividing 2040 by 354, we get 5 with a remainder of 270.
Record the quotient 5 as the next digit in the result. 
Result so far: 206068.4745
If we take 1770 away from 2040, we end up with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Step 13:
2700 divided by 354 is 7 with a remainder of 222.
Use 7 as the next digit of our solution. 
Result so far: 206068.47457
Deduct 2478 from 2700 and we're left with 222.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2220, and continue the process.

Advancing to step 14:
2220 divided by 354 is 6 with a remainder of 96.
Put 6 as the next digit of the answer. 
Result so far: 206068.474576
If we subtract 2124 from 2220, we get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Step 15:
354 can be fit into 960 2 times, resulting in a remainder of 252.
Use 2 as the next digit of our solution. 
Result so far: 206068.4745762
If we subtract 708 from 960, we get 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

On to step 16:
If we divide 2520 by 354, we get 7 and a remainder of 42.
Put 7 as the next digit of the answer. 
Result so far: 206068.47457627
If we take 2478 away from 2520, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Our division results in 206068.47457627 with a remaining 4.2e-08.