We're dividing 99973 by 30 
We want to divide 99973 by 30.

Step 1:
The number 30 fits into 9 0 times, leaving a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 30

On to step 2:
30 goes into 99 3 times with a remainder of 9.
Write down 3 as next digit of the result. 
Result so far: 3.0
Deduct 90 from 99 and we're left with 9.
Bring next digit (9) of the dividend behind the 9 and repeat the process: 99 / 30

Step 3:
If we divide 99 by 30, we get 3 and a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 33.0
The remainder is 9 after subtracting 90 from 99.
Append the next digit (7) from the dividend to 9 and continue with: 97 / 30

Moving on to step 4:
If we divide 97 by 30, we get 3 and a remainder of 7.
The next digit of our result is 3. 
Result so far: 333.0
Deduct 90 from 97 and we're left with 7.
Append the next digit (3) from the dividend to 7 and continue with: 73 / 30

On to step 5:
30 can be fit into 73 2 times, resulting in a remainder of 13.
Put 2 as the next digit of the answer. 
Result so far: 3332.0
If we subtract 60 from 73, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Moving on to step 6:
The number 30 fits into 130 4 times, leaving a remainder of 10.
The number 4 becomes the next digit in our result. 
Result so far: 3332.4
Subtracting 120 from 130 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 7:
When dividing 100 by 30, we get 3 with a remainder of 10.
Put 3 as the next digit of the answer. 
Result so far: 3332.43
Subtracting 90 from 100 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 8:
The number 30 fits into 100 3 times, leaving a remainder of 10.
Record the quotient 3 as the next digit in the result. 
Result so far: 3332.433
If we take 90 away from 100, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

The final result is 3332.433 with a remainder of 0.001.