Let's divide 30933583 by 645
We're looking to find how many times 645 goes into 30933583.

Moving on to step 1:
When dividing 3 by 645, we get 0 with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 645

Advancing to step 2:
645 can be fit into 30 0 times, resulting in a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 30 after subtracting 0 from 30.
Bring next digit (9) of the dividend behind the 30 and repeat the process: 309 / 645

Advancing to step 3:
645 can be fit into 309 0 times, resulting in a remainder of 309.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 309 and we're left with 309.
Bring next digit (3) of the dividend behind the 309 and repeat the process: 3093 / 645

Going ahead to step 4:
The number 645 fits into 3093 4 times, leaving a remainder of 513.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we take 2580 away from 3093, we end up with 513.
Take the next digit (3) from the dividend and append it to 513, then repeat: 5133 / 645

On to step 5:
645 can be fit into 5133 7 times, resulting in a remainder of 618.
Put 7 as the next digit of the answer. 
Result so far: 47.0
Subtract 4515 from 5133 to get 618.
Include the next digit (5) from the dividend after 618, then repeat: 6185 / 645

Moving on to step 6:
645 goes into 6185 9 times with a remainder of 380.
Record the quotient 9 as the next digit in the result. 
Result so far: 479.0
Deduct 5805 from 6185 and we're left with 380.
Include the next digit (8) from the dividend after 380, then repeat: 3808 / 645

Moving on to step 7:
645 can be fit into 3808 5 times, resulting in a remainder of 583.
Use 5 as the next digit of our solution. 
Result so far: 4795.0
Subtracting 3225 from 3808 leaves us with 583.
Include the next digit (3) from the dividend after 583, then repeat: 5833 / 645

Step 8:
645 can be fit into 5833 9 times, resulting in a remainder of 28.
Put 9 as the next digit of the answer. 
Result so far: 47959.0
If we subtract 5805 from 5833, we get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 9:
The number 645 fits into 280 0 times, leaving a remainder of 280.
Put 0 as the next digit of the answer. 
Result so far: 47959.0
Subtracting 0 from 280 leaves us with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

On to step 10:
645 goes into 2800 4 times with a remainder of 220.
The number 4 becomes the next digit in our result. 
Result so far: 47959.04
Subtracting 2580 from 2800 leaves us with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Advancing to step 11:
2200 divided by 645 is 3 with a remainder of 265.
Write down 3 as next digit of the result. 
Result so far: 47959.043
If we subtract 1935 from 2200, we get 265.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

Going ahead to step 12:
2650 divided by 645 is 4 with a remainder of 70.
Put 4 as the next digit of the answer. 
Result so far: 47959.0434
Subtracting 2580 from 2650 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 13:
The number 645 fits into 700 1 times, leaving a remainder of 55.
Use 1 as the next digit of our solution. 
Result so far: 47959.04341
If we take 645 away from 700, we end up with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 14:
If we divide 550 by 645, we get 0 and a remainder of 550.
The number 0 becomes the next digit in our result. 
Result so far: 47959.04341
If we subtract 0 from 550, we get 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

On to step 15:
When dividing 5500 by 645, we get 8 with a remainder of 340.
The number 8 becomes the next digit in our result. 
Result so far: 47959.0434108
Subtract 5160 from 5500 to get 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Going ahead to step 16:
The number 645 fits into 3400 5 times, leaving a remainder of 175.
Write down 5 as next digit of the result. 
Result so far: 47959.04341085
Subtracting 3225 from 3400 leaves us with 175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

The quotient of the division is 47959.04341085, and the remainder is 1.75e-07.