Let's divide 17408225 by 428
The aim is to understand the frequency of 428 in 17408225.

Going ahead to step 1:
428 goes into 1 0 times with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Include the next digit (7) from the dividend after 1, then repeat: 17 / 428

On to step 2:
The number 428 fits into 17 0 times, leaving a remainder of 17.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 17 and we're left with 17.
Take the next digit (4) from the dividend and append it to 17, then repeat: 174 / 428

Step 3:
428 goes into 174 0 times with a remainder of 174.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 174 to get 174.
Bring next digit (0) of the dividend behind the 174 and repeat the process: 1740 / 428

On to step 4:
1740 divided by 428 is 4 with a remainder of 28.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 1712 from 1740 and we're left with 28.
Append the next digit (8) from the dividend to 28 and continue with: 288 / 428

Let's proceed to step 5:
288 divided by 428 is 0 with a remainder of 288.
Put 0 as the next digit of the answer. 
Result so far: 40.0
If we take 0 away from 288, we end up with 288.
Take the next digit (2) from the dividend and append it to 288, then repeat: 2882 / 428

On to step 6:
When dividing 2882 by 428, we get 6 with a remainder of 314.
Put 6 as the next digit of the answer. 
Result so far: 406.0
If we take 2568 away from 2882, we end up with 314.
Include the next digit (2) from the dividend after 314, then repeat: 3142 / 428

Moving on to step 7:
428 goes into 3142 7 times with a remainder of 146.
The number 7 becomes the next digit in our result. 
Result so far: 4067.0
If we take 2996 away from 3142, we end up with 146.
Bring next digit (5) of the dividend behind the 146 and repeat the process: 1465 / 428

Step 8:
428 can be fit into 1465 3 times, resulting in a remainder of 181.
Write down 3 as next digit of the result. 
Result so far: 40673.0
Subtracting 1284 from 1465 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.

On to step 9:
If we divide 1810 by 428, we get 4 and a remainder of 98.
The number 4 becomes the next digit in our result. 
Result so far: 40673.4
Subtract 1712 from 1810 to get 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Going ahead to step 10:
428 goes into 980 2 times with a remainder of 124.
Write down 2 as next digit of the result. 
Result so far: 40673.42
If we take 856 away from 980, we end up with 124.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1240, and continue the process.

Advancing to step 11:
428 can be fit into 1240 2 times, resulting in a remainder of 384.
Record the quotient 2 as the next digit in the result. 
Result so far: 40673.422
If we take 856 away from 1240, we end up with 384.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3840, and continue the process.

After the division, we end up with 40673.422 and a remainder of 0.0384.