30025521 ÷ 66 
Our goal is to divide 30025521 by 66.

Advancing to step 1:
If we divide 3 by 66, we get 0 and a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 66

Advancing to step 2:
30 divided by 66 is 0 with a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 30 to get 30.
Fetch the next digit (0) from the dividend, attach it to 30 and continue: 300 / 66

Moving on to step 3:
When dividing 300 by 66, we get 4 with a remainder of 36.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Subtract 264 from 300 to get 36.
Bring next digit (2) of the dividend behind the 36 and repeat the process: 362 / 66

On to step 4:
The number 66 fits into 362 5 times, leaving a remainder of 32.
The next digit of our result is 5. 
Result so far: 45.0
Subtracting 330 from 362 leaves us with 32.
Append the next digit (5) from the dividend to 32 and continue with: 325 / 66

On to step 5:
325 divided by 66 is 4 with a remainder of 61.
Use 4 as the next digit of our solution. 
Result so far: 454.0
Subtracting 264 from 325 leaves us with 61.
Take the next digit (5) from the dividend and append it to 61, then repeat: 615 / 66

Going ahead to step 6:
66 can be fit into 615 9 times, resulting in a remainder of 21.
Record the quotient 9 as the next digit in the result. 
Result so far: 4549.0
The remainder is 21 after subtracting 594 from 615.
Take the next digit (2) from the dividend and append it to 21, then repeat: 212 / 66

Let's proceed to step 7:
212 divided by 66 is 3 with a remainder of 14.
The number 3 becomes the next digit in our result. 
Result so far: 45493.0
The remainder is 14 after subtracting 198 from 212.
Take the next digit (1) from the dividend and append it to 14, then repeat: 141 / 66

Moving on to step 8:
If we divide 141 by 66, we get 2 and a remainder of 9.
Use 2 as the next digit of our solution. 
Result so far: 454932.0
The remainder is 9 after subtracting 132 from 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Going ahead to step 9:
66 goes into 90 1 times with a remainder of 24.
Write down 1 as next digit of the result. 
Result so far: 454932.1
If we subtract 66 from 90, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 10:
If we divide 240 by 66, we get 3 and a remainder of 42.
Use 3 as the next digit of our solution. 
Result so far: 454932.13
If we take 198 away from 240, we end up with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 11:
When dividing 420 by 66, we get 6 with a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 454932.136
Subtract 396 from 420 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 12:
If we divide 240 by 66, we get 3 and a remainder of 42.
Record the quotient 3 as the next digit in the result. 
Result so far: 454932.1363
Subtracting 198 from 240 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 13:
When dividing 420 by 66, we get 6 with a remainder of 24.
Write down 6 as next digit of the result. 
Result so far: 454932.13636
If we subtract 396 from 420, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

On to step 14:
When dividing 240 by 66, we get 3 with a remainder of 42.
Use 3 as the next digit of our solution. 
Result so far: 454932.136363
Subtracting 198 from 240 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 15:
The number 66 fits into 420 6 times, leaving a remainder of 24.
Use 6 as the next digit of our solution. 
Result so far: 454932.1363636
If we subtract 396 from 420, we get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 16:
If we divide 240 by 66, we get 3 and a remainder of 42.
Put 3 as the next digit of the answer. 
Result so far: 454932.13636363
The remainder is 42 after subtracting 198 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

The final result is 454932.13636363 with a remainder of 4.2e-08.