Let's divide 90398708 by 354
The aim is to understand the frequency of 354 in 90398708.

On to step 1:
When dividing 9 by 354, we get 0 with a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 354

Step 2:
The number 354 fits into 90 0 times, leaving a remainder of 90.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 90, we get 90.
Append the next digit (3) from the dividend to 90 and continue with: 903 / 354

Step 3:
When dividing 903 by 354, we get 2 with a remainder of 195.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 708 from 903 and we're left with 195.
Take the next digit (9) from the dividend and append it to 195, then repeat: 1959 / 354

Step 4:
354 can be fit into 1959 5 times, resulting in a remainder of 189.
The number 5 becomes the next digit in our result. 
Result so far: 25.0
Subtracting 1770 from 1959 leaves us with 189.
Fetch the next digit (8) from the dividend, attach it to 189 and continue: 1898 / 354

Step 5:
When dividing 1898 by 354, we get 5 with a remainder of 128.
Put 5 as the next digit of the answer. 
Result so far: 255.0
Subtract 1770 from 1898 to get 128.
Append the next digit (7) from the dividend to 128 and continue with: 1287 / 354

Advancing to step 6:
If we divide 1287 by 354, we get 3 and a remainder of 225.
Write down 3 as next digit of the result. 
Result so far: 2553.0
Subtracting 1062 from 1287 leaves us with 225.
Append the next digit (0) from the dividend to 225 and continue with: 2250 / 354

Advancing to step 7:
354 can be fit into 2250 6 times, resulting in a remainder of 126.
Write down 6 as next digit of the result. 
Result so far: 25536.0
Subtract 2124 from 2250 to get 126.
Append the next digit (8) from the dividend to 126 and continue with: 1268 / 354

Going ahead to step 8:
354 goes into 1268 3 times with a remainder of 206.
Record the quotient 3 as the next digit in the result. 
Result so far: 255363.0
Deduct 1062 from 1268 and we're left with 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Advancing to step 9:
2060 divided by 354 is 5 with a remainder of 290.
Use 5 as the next digit of our solution. 
Result so far: 255363.5
If we take 1770 away from 2060, we end up with 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Going ahead to step 10:
The number 354 fits into 2900 8 times, leaving a remainder of 68.
Use 8 as the next digit of our solution. 
Result so far: 255363.58
Subtracting 2832 from 2900 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 11:
680 divided by 354 is 1 with a remainder of 326.
Use 1 as the next digit of our solution. 
Result so far: 255363.581
If we subtract 354 from 680, we get 326.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3260, and continue the process.

Step 12:
354 can be fit into 3260 9 times, resulting in a remainder of 74.
Record the quotient 9 as the next digit in the result. 
Result so far: 255363.5819
The remainder is 74 after subtracting 3186 from 3260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

On to step 13:
If we divide 740 by 354, we get 2 and a remainder of 32.
Record the quotient 2 as the next digit in the result. 
Result so far: 255363.58192
If we subtract 708 from 740, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 14:
320 divided by 354 is 0 with a remainder of 320.
Write down 0 as next digit of the result. 
Result so far: 255363.58192
Subtracting 0 from 320 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Step 15:
354 goes into 3200 9 times with a remainder of 14.
Write down 9 as next digit of the result. 
Result so far: 255363.5819209
Subtracting 3186 from 3200 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 16:
140 divided by 354 is 0 with a remainder of 140.
The next digit of our result is 0. 
Result so far: 255363.5819209
Deduct 0 from 140 and we're left with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

The quotient of the division is 255363.5819209, and the remainder is 1.4e-07.