15311220 ÷ 440 
The aim is to understand the frequency of 440 in 15311220.

Moving on to step 1:
If we divide 1 by 440, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 440

Let's proceed to step 2:
The number 440 fits into 15 0 times, leaving a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Append the next digit (3) from the dividend to 15 and continue with: 153 / 440

Moving on to step 3:
When dividing 153 by 440, we get 0 with a remainder of 153.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 153, we end up with 153.
Include the next digit (1) from the dividend after 153, then repeat: 1531 / 440

Step 4:
When dividing 1531 by 440, we get 3 with a remainder of 211.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 1320 away from 1531, we end up with 211.
Include the next digit (1) from the dividend after 211, then repeat: 2111 / 440

Let's proceed to step 5:
440 goes into 2111 4 times with a remainder of 351.
Use 4 as the next digit of our solution. 
Result so far: 34.0
The remainder is 351 after subtracting 1760 from 2111.
Append the next digit (2) from the dividend to 351 and continue with: 3512 / 440

Advancing to step 6:
440 goes into 3512 7 times with a remainder of 432.
Record the quotient 7 as the next digit in the result. 
Result so far: 347.0
Subtract 3080 from 3512 to get 432.
Include the next digit (2) from the dividend after 432, then repeat: 4322 / 440

Let's proceed to step 7:
440 can be fit into 4322 9 times, resulting in a remainder of 362.
Write down 9 as next digit of the result. 
Result so far: 3479.0
If we take 3960 away from 4322, we end up with 362.
Grab the next digit (0) from the dividend, add it to 362, then carry on: 3620 / 440

Let's proceed to step 8:
3620 divided by 440 is 8 with a remainder of 100.
Record the quotient 8 as the next digit in the result. 
Result so far: 34798.0
If we take 3520 away from 3620, we end up with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Let's proceed to step 9:
If we divide 1000 by 440, we get 2 and a remainder of 120.
Use 2 as the next digit of our solution. 
Result so far: 34798.2
Deduct 880 from 1000 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Let's proceed to step 10:
When dividing 1200 by 440, we get 2 with a remainder of 320.
Write down 2 as next digit of the result. 
Result so far: 34798.22
Subtract 880 from 1200 to get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Our division results in 34798.22 with a remaining 0.32.