We're dividing 20448715 by 402 
The aim is to understand the frequency of 402 in 20448715.

On to step 1:
402 can be fit into 2 0 times, resulting in a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 402

On to step 2:
402 can be fit into 20 0 times, resulting in a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 20 to get 20.
Take the next digit (4) from the dividend and append it to 20, then repeat: 204 / 402

Advancing to step 3:
402 can be fit into 204 0 times, resulting in a remainder of 204.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 204 after subtracting 0 from 204.
Take the next digit (4) from the dividend and append it to 204, then repeat: 2044 / 402

Step 4:
If we divide 2044 by 402, we get 5 and a remainder of 34.
Write down 5 as next digit of the result. 
Result so far: 5.0
If we take 2010 away from 2044, we end up with 34.
Fetch the next digit (8) from the dividend, attach it to 34 and continue: 348 / 402

Moving on to step 5:
402 can be fit into 348 0 times, resulting in a remainder of 348.
Write down 0 as next digit of the result. 
Result so far: 50.0
The remainder is 348 after subtracting 0 from 348.
Append the next digit (7) from the dividend to 348 and continue with: 3487 / 402

Going ahead to step 6:
When dividing 3487 by 402, we get 8 with a remainder of 271.
Write down 8 as next digit of the result. 
Result so far: 508.0
Subtracting 3216 from 3487 leaves us with 271.
Take the next digit (1) from the dividend and append it to 271, then repeat: 2711 / 402

Going ahead to step 7:
2711 divided by 402 is 6 with a remainder of 299.
Record the quotient 6 as the next digit in the result. 
Result so far: 5086.0
Deduct 2412 from 2711 and we're left with 299.
Take the next digit (5) from the dividend and append it to 299, then repeat: 2995 / 402

Let's proceed to step 8:
When dividing 2995 by 402, we get 7 with a remainder of 181.
Write down 7 as next digit of the result. 
Result so far: 50867.0
Subtracting 2814 from 2995 leaves us with 181.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1810, and continue the process.

Let's proceed to step 9:
The number 402 fits into 1810 4 times, leaving a remainder of 202.
Write down 4 as next digit of the result. 
Result so far: 50867.4
The remainder is 202 after subtracting 1608 from 1810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2020, and continue the process.

Going ahead to step 10:
If we divide 2020 by 402, we get 5 and a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 50867.45
Subtract 2010 from 2020 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 11:
100 divided by 402 is 0 with a remainder of 100.
The next digit of our result is 0. 
Result so far: 50867.45
The remainder is 100 after subtracting 0 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Going ahead to step 12:
402 goes into 1000 2 times with a remainder of 196.
Use 2 as the next digit of our solution. 
Result so far: 50867.4502
Subtract 804 from 1000 to get 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Moving on to step 13:
1960 divided by 402 is 4 with a remainder of 352.
The next digit of our result is 4. 
Result so far: 50867.45024
Subtract 1608 from 1960 to get 352.
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 14:
402 can be fit into 3520 8 times, resulting in a remainder of 304.
Use 8 as the next digit of our solution. 
Result so far: 50867.450248
If we subtract 3216 from 3520, we get 304.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

Let's proceed to step 15:
3040 divided by 402 is 7 with a remainder of 226.
Use 7 as the next digit of our solution. 
Result so far: 50867.4502487
Deduct 2814 from 3040 and we're left with 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Moving on to step 16:
If we divide 2260 by 402, we get 5 and a remainder of 250.
The next digit of our result is 5. 
Result so far: 50867.45024875
The remainder is 250 after subtracting 2010 from 2260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

In conclusion, the division gives 50867.45024875 with a balance of 2.5e-07.