645428 ÷ 30 
We want to figure out the number of times 645428 can be divided by 30.

Moving on to step 1:
The number 30 fits into 6 0 times, leaving a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (4) from the dividend to 6 and continue with: 64 / 30

Let's proceed to step 2:
30 goes into 64 2 times with a remainder of 4.
The next digit of our result is 2. 
Result so far: 2.0
Subtract 60 from 64 to get 4.
Fetch the next digit (5) from the dividend, attach it to 4 and continue: 45 / 30

On to step 3:
30 can be fit into 45 1 times, resulting in a remainder of 15.
Use 1 as the next digit of our solution. 
Result so far: 21.0
The remainder is 15 after subtracting 30 from 45.
Append the next digit (4) from the dividend to 15 and continue with: 154 / 30

Let's proceed to step 4:
If we divide 154 by 30, we get 5 and a remainder of 4.
The number 5 becomes the next digit in our result. 
Result so far: 215.0
If we subtract 150 from 154, we get 4.
Fetch the next digit (2) from the dividend, attach it to 4 and continue: 42 / 30

On to step 5:
30 goes into 42 1 times with a remainder of 12.
Use 1 as the next digit of our solution. 
Result so far: 2151.0
If we subtract 30 from 42, we get 12.
Take the next digit (8) from the dividend and append it to 12, then repeat: 128 / 30

Advancing to step 6:
30 can be fit into 128 4 times, resulting in a remainder of 8.
Put 4 as the next digit of the answer. 
Result so far: 21514.0
Subtracting 120 from 128 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 7:
80 divided by 30 is 2 with a remainder of 20.
The next digit of our result is 2. 
Result so far: 21514.2
If we subtract 60 from 80, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 8:
When dividing 200 by 30, we get 6 with a remainder of 20.
Put 6 as the next digit of the answer. 
Result so far: 21514.26
Deduct 180 from 200 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 9:
200 divided by 30 is 6 with a remainder of 20.
Record the quotient 6 as the next digit in the result. 
Result so far: 21514.266
Deduct 180 from 200 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The quotient of the division is 21514.266, and the remainder is 0.002.