30533010 divided by 405 
The aim is to understand the frequency of 405 in 30533010.

Let's proceed to step 1:
If we divide 3 by 405, we get 0 and a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 405

Moving on to step 2:
If we divide 30 by 405, we get 0 and a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 30 leaves us with 30.
Bring next digit (5) of the dividend behind the 30 and repeat the process: 305 / 405

Going ahead to step 3:
405 goes into 305 0 times with a remainder of 305.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 305, we get 305.
Include the next digit (3) from the dividend after 305, then repeat: 3053 / 405

Advancing to step 4:
The number 405 fits into 3053 7 times, leaving a remainder of 218.
The next digit of our result is 7. 
Result so far: 7.0
If we subtract 2835 from 3053, we get 218.
Grab the next digit (3) from the dividend, add it to 218, then carry on: 2183 / 405

Step 5:
405 can be fit into 2183 5 times, resulting in a remainder of 158.
Write down 5 as next digit of the result. 
Result so far: 75.0
Subtracting 2025 from 2183 leaves us with 158.
Fetch the next digit (0) from the dividend, attach it to 158 and continue: 1580 / 405

Advancing to step 6:
The number 405 fits into 1580 3 times, leaving a remainder of 365.
Write down 3 as next digit of the result. 
Result so far: 753.0
If we subtract 1215 from 1580, we get 365.
Bring next digit (1) of the dividend behind the 365 and repeat the process: 3651 / 405

Going ahead to step 7:
405 can be fit into 3651 9 times, resulting in a remainder of 6.
The number 9 becomes the next digit in our result. 
Result so far: 7539.0
Subtracting 3645 from 3651 leaves us with 6.
Bring next digit (0) of the dividend behind the 6 and repeat the process: 60 / 405

On to step 8:
If we divide 60 by 405, we get 0 and a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 75390.0
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 9:
405 goes into 600 1 times with a remainder of 195.
The next digit of our result is 1. 
Result so far: 75390.1
The remainder is 195 after subtracting 405 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Step 10:
The number 405 fits into 1950 4 times, leaving a remainder of 330.
Use 4 as the next digit of our solution. 
Result so far: 75390.14
Deduct 1620 from 1950 and we're left with 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Step 11:
405 can be fit into 3300 8 times, resulting in a remainder of 60.
Put 8 as the next digit of the answer. 
Result so far: 75390.148
Subtract 3240 from 3300 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 12:
600 divided by 405 is 1 with a remainder of 195.
Record the quotient 1 as the next digit in the result. 
Result so far: 75390.1481
The remainder is 195 after subtracting 405 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Step 13:
When dividing 1950 by 405, we get 4 with a remainder of 330.
Record the quotient 4 as the next digit in the result. 
Result so far: 75390.14814
If we take 1620 away from 1950, we end up with 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Let's proceed to step 14:
3300 divided by 405 is 8 with a remainder of 60.
The number 8 becomes the next digit in our result. 
Result so far: 75390.148148
If we subtract 3240 from 3300, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 15:
600 divided by 405 is 1 with a remainder of 195.
Record the quotient 1 as the next digit in the result. 
Result so far: 75390.1481481
The remainder is 195 after subtracting 405 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Step 16:
405 goes into 1950 4 times with a remainder of 330.
Put 4 as the next digit of the answer. 
Result so far: 75390.14814814
If we take 1620 away from 1950, we end up with 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

The quotient of the division is 75390.14814814, and the remainder is 3.3e-07.