45023360 ÷ 261 
The aim is to understand the frequency of 261 in 45023360.

Step 1:
When dividing 4 by 261, we get 0 with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Bring next digit (5) of the dividend behind the 4 and repeat the process: 45 / 261

Going ahead to step 2:
261 goes into 45 0 times with a remainder of 45.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 45, we end up with 45.
Take the next digit (0) from the dividend and append it to 45, then repeat: 450 / 261

Advancing to step 3:
261 can be fit into 450 1 times, resulting in a remainder of 189.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 261 from 450, we get 189.
Include the next digit (2) from the dividend after 189, then repeat: 1892 / 261

Step 4:
The number 261 fits into 1892 7 times, leaving a remainder of 65.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
The remainder is 65 after subtracting 1827 from 1892.
Bring next digit (3) of the dividend behind the 65 and repeat the process: 653 / 261

On to step 5:
If we divide 653 by 261, we get 2 and a remainder of 131.
Put 2 as the next digit of the answer. 
Result so far: 172.0
Subtracting 522 from 653 leaves us with 131.
Append the next digit (3) from the dividend to 131 and continue with: 1313 / 261

Moving on to step 6:
If we divide 1313 by 261, we get 5 and a remainder of 8.
Put 5 as the next digit of the answer. 
Result so far: 1725.0
The remainder is 8 after subtracting 1305 from 1313.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 261

Let's proceed to step 7:
If we divide 86 by 261, we get 0 and a remainder of 86.
The number 0 becomes the next digit in our result. 
Result so far: 17250.0
If we take 0 away from 86, we end up with 86.
Fetch the next digit (0) from the dividend, attach it to 86 and continue: 860 / 261

On to step 8:
The number 261 fits into 860 3 times, leaving a remainder of 77.
Record the quotient 3 as the next digit in the result. 
Result so far: 172503.0
Subtracting 783 from 860 leaves us with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Advancing to step 9:
When dividing 770 by 261, we get 2 with a remainder of 248.
Record the quotient 2 as the next digit in the result. 
Result so far: 172503.2
Subtract 522 from 770 to get 248.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Step 10:
261 can be fit into 2480 9 times, resulting in a remainder of 131.
Put 9 as the next digit of the answer. 
Result so far: 172503.29
Deduct 2349 from 2480 and we're left with 131.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1310, and continue the process.

Step 11:
261 goes into 1310 5 times with a remainder of 5.
The next digit of our result is 5. 
Result so far: 172503.295
If we take 1305 away from 1310, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 12:
50 divided by 261 is 0 with a remainder of 50.
Write down 0 as next digit of the result. 
Result so far: 172503.295
If we subtract 0 from 50, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 13:
261 can be fit into 500 1 times, resulting in a remainder of 239.
Record the quotient 1 as the next digit in the result. 
Result so far: 172503.29501
If we subtract 261 from 500, we get 239.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2390, and continue the process.

On to step 14:
The number 261 fits into 2390 9 times, leaving a remainder of 41.
Write down 9 as next digit of the result. 
Result so far: 172503.295019
If we subtract 2349 from 2390, we get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Step 15:
The number 261 fits into 410 1 times, leaving a remainder of 149.
The number 1 becomes the next digit in our result. 
Result so far: 172503.2950191
Deduct 261 from 410 and we're left with 149.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1490, and continue the process.

On to step 16:
1490 divided by 261 is 5 with a remainder of 185.
Use 5 as the next digit of our solution. 
Result so far: 172503.29501915
Deduct 1305 from 1490 and we're left with 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

The final outcome is 172503.29501915, with a leftover of 1.85e-07.