2116612 ÷ 354 
The aim is to understand the frequency of 354 in 2116612.

Moving on to step 1:
When dividing 2 by 354, we get 0 with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 354

On to step 2:
354 goes into 21 0 times with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Include the next digit (1) from the dividend after 21, then repeat: 211 / 354

Moving on to step 3:
If we divide 211 by 354, we get 0 and a remainder of 211.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 211, we end up with 211.
Grab the next digit (6) from the dividend, add it to 211, then carry on: 2116 / 354

Moving on to step 4:
354 can be fit into 2116 5 times, resulting in a remainder of 346.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
The remainder is 346 after subtracting 1770 from 2116.
Append the next digit (6) from the dividend to 346 and continue with: 3466 / 354

Moving on to step 5:
3466 divided by 354 is 9 with a remainder of 280.
Use 9 as the next digit of our solution. 
Result so far: 59.0
Deduct 3186 from 3466 and we're left with 280.
Grab the next digit (1) from the dividend, add it to 280, then carry on: 2801 / 354

Step 6:
2801 divided by 354 is 7 with a remainder of 323.
Write down 7 as next digit of the result. 
Result so far: 597.0
If we subtract 2478 from 2801, we get 323.
Append the next digit (2) from the dividend to 323 and continue with: 3232 / 354

Moving on to step 7:
354 can be fit into 3232 9 times, resulting in a remainder of 46.
The number 9 becomes the next digit in our result. 
Result so far: 5979.0
Subtract 3186 from 3232 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 8:
When dividing 460 by 354, we get 1 with a remainder of 106.
Record the quotient 1 as the next digit in the result. 
Result so far: 5979.1
Subtracting 354 from 460 leaves us with 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

On to step 9:
When dividing 1060 by 354, we get 2 with a remainder of 352.
Use 2 as the next digit of our solution. 
Result so far: 5979.12
The remainder is 352 after subtracting 708 from 1060.
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 10:
When dividing 3520 by 354, we get 9 with a remainder of 334.
Record the quotient 9 as the next digit in the result. 
Result so far: 5979.129
Subtract 3186 from 3520 to get 334.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3340, and continue the process.

Going ahead to step 11:
354 goes into 3340 9 times with a remainder of 154.
Use 9 as the next digit of our solution. 
Result so far: 5979.1299
If we subtract 3186 from 3340, we get 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

After the division, we end up with 5979.1299 and a remainder of 0.00154.