We're dividing 98785789 by 438 
The aim is to understand the frequency of 438 in 98785789.

On to step 1:
When dividing 9 by 438, we get 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Take the next digit (8) from the dividend and append it to 9, then repeat: 98 / 438

Going ahead to step 2:
438 can be fit into 98 0 times, resulting in a remainder of 98.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 98 to get 98.
Include the next digit (7) from the dividend after 98, then repeat: 987 / 438

Let's proceed to step 3:
The number 438 fits into 987 2 times, leaving a remainder of 111.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 876 away from 987, we end up with 111.
Take the next digit (8) from the dividend and append it to 111, then repeat: 1118 / 438

Advancing to step 4:
If we divide 1118 by 438, we get 2 and a remainder of 242.
Use 2 as the next digit of our solution. 
Result so far: 22.0
The remainder is 242 after subtracting 876 from 1118.
Fetch the next digit (5) from the dividend, attach it to 242 and continue: 2425 / 438

Moving on to step 5:
When dividing 2425 by 438, we get 5 with a remainder of 235.
The next digit of our result is 5. 
Result so far: 225.0
Deduct 2190 from 2425 and we're left with 235.
Fetch the next digit (7) from the dividend, attach it to 235 and continue: 2357 / 438

Moving on to step 6:
If we divide 2357 by 438, we get 5 and a remainder of 167.
Put 5 as the next digit of the answer. 
Result so far: 2255.0
If we take 2190 away from 2357, we end up with 167.
Grab the next digit (8) from the dividend, add it to 167, then carry on: 1678 / 438

Advancing to step 7:
438 can be fit into 1678 3 times, resulting in a remainder of 364.
Use 3 as the next digit of our solution. 
Result so far: 22553.0
Deduct 1314 from 1678 and we're left with 364.
Include the next digit (9) from the dividend after 364, then repeat: 3649 / 438

Advancing to step 8:
438 can be fit into 3649 8 times, resulting in a remainder of 145.
Write down 8 as next digit of the result. 
Result so far: 225538.0
If we take 3504 away from 3649, we end up with 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Let's proceed to step 9:
1450 divided by 438 is 3 with a remainder of 136.
Write down 3 as next digit of the result. 
Result so far: 225538.3
Subtracting 1314 from 1450 leaves us with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Moving on to step 10:
438 can be fit into 1360 3 times, resulting in a remainder of 46.
Record the quotient 3 as the next digit in the result. 
Result so far: 225538.33
If we subtract 1314 from 1360, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

The quotient of the division is 225538.33, and the remainder is 0.046.