218620 ÷ 72 
The aim is to understand the frequency of 72 in 218620.

On to step 1:
72 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 72

On to step 2:
72 can be fit into 21 0 times, resulting in a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Fetch the next digit (8) from the dividend, attach it to 21 and continue: 218 / 72

Moving on to step 3:
72 goes into 218 3 times with a remainder of 2.
Put 3 as the next digit of the answer. 
Result so far: 3.0
The remainder is 2 after subtracting 216 from 218.
Fetch the next digit (6) from the dividend, attach it to 2 and continue: 26 / 72

Going ahead to step 4:
72 goes into 26 0 times with a remainder of 26.
Put 0 as the next digit of the answer. 
Result so far: 30.0
Deduct 0 from 26 and we're left with 26.
Grab the next digit (2) from the dividend, add it to 26, then carry on: 262 / 72

Going ahead to step 5:
72 can be fit into 262 3 times, resulting in a remainder of 46.
Record the quotient 3 as the next digit in the result. 
Result so far: 303.0
If we take 216 away from 262, we end up with 46.
Grab the next digit (0) from the dividend, add it to 46, then carry on: 460 / 72

Step 6:
72 goes into 460 6 times with a remainder of 28.
Put 6 as the next digit of the answer. 
Result so far: 3036.0
Subtract 432 from 460 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 7:
72 goes into 280 3 times with a remainder of 64.
Write down 3 as next digit of the result. 
Result so far: 3036.3
Deduct 216 from 280 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 8:
72 can be fit into 640 8 times, resulting in a remainder of 64.
Write down 8 as next digit of the result. 
Result so far: 3036.38
Deduct 576 from 640 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Going ahead to step 9:
72 can be fit into 640 8 times, resulting in a remainder of 64.
The next digit of our result is 8. 
Result so far: 3036.388
Subtracting 576 from 640 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

The final result is 3036.388 with a remainder of 0.0064.