We look at the division of 30207509 by 398 
Our goal is to divide 30207509 by 398.

Step 1:
If we divide 3 by 398, we get 0 and a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Append the next digit (0) from the dividend to 3 and continue with: 30 / 398

Moving on to step 2:
If we divide 30 by 398, we get 0 and a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 30, we end up with 30.
Append the next digit (2) from the dividend to 30 and continue with: 302 / 398

Advancing to step 3:
If we divide 302 by 398, we get 0 and a remainder of 302.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 302 and we're left with 302.
Append the next digit (0) from the dividend to 302 and continue with: 3020 / 398

Going ahead to step 4:
398 goes into 3020 7 times with a remainder of 234.
Put 7 as the next digit of the answer. 
Result so far: 7.0
Subtract 2786 from 3020 to get 234.
Include the next digit (7) from the dividend after 234, then repeat: 2347 / 398

Moving on to step 5:
The number 398 fits into 2347 5 times, leaving a remainder of 357.
The next digit of our result is 5. 
Result so far: 75.0
Deduct 1990 from 2347 and we're left with 357.
Append the next digit (5) from the dividend to 357 and continue with: 3575 / 398

On to step 6:
398 can be fit into 3575 8 times, resulting in a remainder of 391.
Write down 8 as next digit of the result. 
Result so far: 758.0
Deduct 3184 from 3575 and we're left with 391.
Take the next digit (0) from the dividend and append it to 391, then repeat: 3910 / 398

On to step 7:
When dividing 3910 by 398, we get 9 with a remainder of 328.
Put 9 as the next digit of the answer. 
Result so far: 7589.0
If we take 3582 away from 3910, we end up with 328.
Append the next digit (9) from the dividend to 328 and continue with: 3289 / 398

Going ahead to step 8:
If we divide 3289 by 398, we get 8 and a remainder of 105.
The next digit of our result is 8. 
Result so far: 75898.0
If we subtract 3184 from 3289, we get 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Let's proceed to step 9:
If we divide 1050 by 398, we get 2 and a remainder of 254.
Put 2 as the next digit of the answer. 
Result so far: 75898.2
If we subtract 796 from 1050, we get 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

On to step 10:
2540 divided by 398 is 6 with a remainder of 152.
Record the quotient 6 as the next digit in the result. 
Result so far: 75898.26
The remainder is 152 after subtracting 2388 from 2540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Advancing to step 11:
The number 398 fits into 1520 3 times, leaving a remainder of 326.
The number 3 becomes the next digit in our result. 
Result so far: 75898.263
The remainder is 326 after subtracting 1194 from 1520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3260, and continue the process.

On to step 12:
398 goes into 3260 8 times with a remainder of 76.
The number 8 becomes the next digit in our result. 
Result so far: 75898.2638
Subtract 3184 from 3260 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 13:
When dividing 760 by 398, we get 1 with a remainder of 362.
Write down 1 as next digit of the result. 
Result so far: 75898.26381
Subtract 398 from 760 to get 362.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3620, and continue the process.

Step 14:
If we divide 3620 by 398, we get 9 and a remainder of 38.
Write down 9 as next digit of the result. 
Result so far: 75898.263819
Subtracting 3582 from 3620 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 15:
If we divide 380 by 398, we get 0 and a remainder of 380.
The number 0 becomes the next digit in our result. 
Result so far: 75898.263819
The remainder is 380 after subtracting 0 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Let's proceed to step 16:
398 goes into 3800 9 times with a remainder of 218.
The next digit of our result is 9. 
Result so far: 75898.26381909
Subtract 3582 from 3800 to 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.

The quotient of the division is 75898.26381909, and the remainder is 2.18e-07.