We look at the division of 18403325 by 402 
The aim is to understand the frequency of 402 in 18403325.

Advancing to step 1:
402 can be fit into 1 0 times, resulting in a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 402

Let's proceed to step 2:
When dividing 18 by 402, we get 0 with a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 18, we get 18.
Grab the next digit (4) from the dividend, add it to 18, then carry on: 184 / 402

Going ahead to step 3:
402 goes into 184 0 times with a remainder of 184.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 184, we end up with 184.
Take the next digit (0) from the dividend and append it to 184, then repeat: 1840 / 402

Moving on to step 4:
The number 402 fits into 1840 4 times, leaving a remainder of 232.
Write down 4 as next digit of the result. 
Result so far: 4.0
Subtracting 1608 from 1840 leaves us with 232.
Append the next digit (3) from the dividend to 232 and continue with: 2323 / 402

Advancing to step 5:
402 can be fit into 2323 5 times, resulting in a remainder of 313.
The next digit of our result is 5. 
Result so far: 45.0
Subtracting 2010 from 2323 leaves us with 313.
Bring next digit (3) of the dividend behind the 313 and repeat the process: 3133 / 402

On to step 6:
The number 402 fits into 3133 7 times, leaving a remainder of 319.
Write down 7 as next digit of the result. 
Result so far: 457.0
The remainder is 319 after subtracting 2814 from 3133.
Append the next digit (2) from the dividend to 319 and continue with: 3192 / 402

Moving on to step 7:
3192 divided by 402 is 7 with a remainder of 378.
Use 7 as the next digit of our solution. 
Result so far: 4577.0
Subtract 2814 from 3192 to get 378.
Take the next digit (5) from the dividend and append it to 378, then repeat: 3785 / 402

Moving on to step 8:
402 goes into 3785 9 times with a remainder of 167.
The next digit of our result is 9. 
Result so far: 45779.0
If we take 3618 away from 3785, we end up with 167.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1670, and continue the process.

Going ahead to step 9:
1670 divided by 402 is 4 with a remainder of 62.
Write down 4 as next digit of the result. 
Result so far: 45779.4
The remainder is 62 after subtracting 1608 from 1670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Let's proceed to step 10:
If we divide 620 by 402, we get 1 and a remainder of 218.
Record the quotient 1 as the next digit in the result. 
Result so far: 45779.41
If we subtract 402 from 620, we get 218.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

Going ahead to step 11:
2180 divided by 402 is 5 with a remainder of 170.
The number 5 becomes the next digit in our result. 
Result so far: 45779.415
The remainder is 170 after subtracting 2010 from 2180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Going ahead to step 12:
If we divide 1700 by 402, we get 4 and a remainder of 92.
Put 4 as the next digit of the answer. 
Result so far: 45779.4154
If we take 1608 away from 1700, we end up with 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Let's proceed to step 13:
402 can be fit into 920 2 times, resulting in a remainder of 116.
Write down 2 as next digit of the result. 
Result so far: 45779.41542
Subtracting 804 from 920 leaves us with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Let's proceed to step 14:
402 goes into 1160 2 times with a remainder of 356.
Write down 2 as next digit of the result. 
Result so far: 45779.415422
If we subtract 804 from 1160, we get 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

After the division, we end up with 45779.415422 and a remainder of 3.56e-05.