We're dividing 30618535 by 21 
We're looking to find how many times 21 goes into 30618535.

Step 1:
3 divided by 21 is 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 21

Advancing to step 2:
When dividing 30 by 21, we get 1 with a remainder of 9.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 21 away from 30, we end up with 9.
Include the next digit (6) from the dividend after 9, then repeat: 96 / 21

Step 3:
The number 21 fits into 96 4 times, leaving a remainder of 12.
Write down 4 as next digit of the result. 
Result so far: 14.0
If we subtract 84 from 96, we get 12.
Grab the next digit (1) from the dividend, add it to 12, then carry on: 121 / 21

Let's proceed to step 4:
21 goes into 121 5 times with a remainder of 16.
Record the quotient 5 as the next digit in the result. 
Result so far: 145.0
Subtracting 105 from 121 leaves us with 16.
Take the next digit (8) from the dividend and append it to 16, then repeat: 168 / 21

Step 5:
21 goes into 168 8 times with a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 1458.0
Deduct 168 from 168 and we're left with 0.
Append the next digit (5) from the dividend to 0 and continue with: 5 / 21

On to step 6:
5 divided by 21 is 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 14580.0
The remainder is 5 after subtracting 0 from 5.
Fetch the next digit (3) from the dividend, attach it to 5 and continue: 53 / 21

Let's proceed to step 7:
53 divided by 21 is 2 with a remainder of 11.
Use 2 as the next digit of our solution. 
Result so far: 145802.0
Subtract 42 from 53 to get 11.
Include the next digit (5) from the dividend after 11, then repeat: 115 / 21

Going ahead to step 8:
If we divide 115 by 21, we get 5 and a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 1458025.0
The remainder is 10 after subtracting 105 from 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 9:
The number 21 fits into 100 4 times, leaving a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 1458025.4
If we take 84 away from 100, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 10:
21 goes into 160 7 times with a remainder of 13.
The next digit of our result is 7. 
Result so far: 1458025.47
Subtract 147 from 160 to 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.

On to step 11:
The number 21 fits into 130 6 times, leaving a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 1458025.476
If we take 126 away from 130, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 12:
40 divided by 21 is 1 with a remainder of 19.
The number 1 becomes the next digit in our result. 
Result so far: 1458025.4761
Subtracting 21 from 40 leaves us with 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 13:
The number 21 fits into 190 9 times, leaving a remainder of 1.
Put 9 as the next digit of the answer. 
Result so far: 1458025.47619
If we take 189 away from 190, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 14:
If we divide 10 by 21, we get 0 and a remainder of 10.
Put 0 as the next digit of the answer. 
Result so far: 1458025.47619
Subtracting 0 from 10 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 15:
21 can be fit into 100 4 times, resulting in a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 1458025.4761904
Subtracting 84 from 100 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 16:
When dividing 160 by 21, we get 7 with a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 1458025.47619047
The remainder is 13 after subtracting 147 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

In conclusion, the division gives 1458025.47619047 with a balance of 1.3e-08.