83975869 divided by 30 
Our goal is to divide 83975869 by 30.

Step 1:
8 divided by 30 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Bring next digit (3) of the dividend behind the 8 and repeat the process: 83 / 30

Moving on to step 2:
83 divided by 30 is 2 with a remainder of 23.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtract 60 from 83 to get 23.
Append the next digit (9) from the dividend to 23 and continue with: 239 / 30

Moving on to step 3:
30 goes into 239 7 times with a remainder of 29.
The next digit of our result is 7. 
Result so far: 27.0
The remainder is 29 after subtracting 210 from 239.
Include the next digit (7) from the dividend after 29, then repeat: 297 / 30

Let's proceed to step 4:
30 goes into 297 9 times with a remainder of 27.
The next digit of our result is 9. 
Result so far: 279.0
If we subtract 270 from 297, we get 27.
Bring next digit (5) of the dividend behind the 27 and repeat the process: 275 / 30

Step 5:
30 can be fit into 275 9 times, resulting in a remainder of 5.
The number 9 becomes the next digit in our result. 
Result so far: 2799.0
Subtracting 270 from 275 leaves us with 5.
Include the next digit (8) from the dividend after 5, then repeat: 58 / 30

Let's proceed to step 6:
When dividing 58 by 30, we get 1 with a remainder of 28.
The next digit of our result is 1. 
Result so far: 27991.0
If we subtract 30 from 58, we get 28.
Grab the next digit (6) from the dividend, add it to 28, then carry on: 286 / 30

Moving on to step 7:
The number 30 fits into 286 9 times, leaving a remainder of 16.
Record the quotient 9 as the next digit in the result. 
Result so far: 279919.0
Deduct 270 from 286 and we're left with 16.
Append the next digit (9) from the dividend to 16 and continue with: 169 / 30

Moving on to step 8:
169 divided by 30 is 5 with a remainder of 19.
Put 5 as the next digit of the answer. 
Result so far: 2799195.0
If we subtract 150 from 169, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Let's proceed to step 9:
If we divide 190 by 30, we get 6 and a remainder of 10.
The next digit of our result is 6. 
Result so far: 2799195.6
The remainder is 10 after subtracting 180 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 10:
30 can be fit into 100 3 times, resulting in a remainder of 10.
The number 3 becomes the next digit in our result. 
Result so far: 2799195.63
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.

Advancing to step 11:
30 can be fit into 100 3 times, resulting in a remainder of 10.
The number 3 becomes the next digit in our result. 
Result so far: 2799195.633
Subtract 90 from 100 to get 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 2799195.633 with a remainder of 0.001.