18012595 ÷ 616 
The aim is to understand the frequency of 616 in 18012595.

On to step 1:
If we divide 1 by 616, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Bring next digit (8) of the dividend behind the 1 and repeat the process: 18 / 616

Advancing to step 2:
18 divided by 616 is 0 with a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 18, we end up with 18.
Bring next digit (0) of the dividend behind the 18 and repeat the process: 180 / 616

Let's proceed to step 3:
The number 616 fits into 180 0 times, leaving a remainder of 180.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 180 and we're left with 180.
Take the next digit (1) from the dividend and append it to 180, then repeat: 1801 / 616

Step 4:
1801 divided by 616 is 2 with a remainder of 569.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtract 1232 from 1801 to get 569.
Bring next digit (2) of the dividend behind the 569 and repeat the process: 5692 / 616

Moving on to step 5:
The number 616 fits into 5692 9 times, leaving a remainder of 148.
The number 9 becomes the next digit in our result. 
Result so far: 29.0
The remainder is 148 after subtracting 5544 from 5692.
Fetch the next digit (5) from the dividend, attach it to 148 and continue: 1485 / 616

On to step 6:
When dividing 1485 by 616, we get 2 with a remainder of 253.
The next digit of our result is 2. 
Result so far: 292.0
If we subtract 1232 from 1485, we get 253.
Take the next digit (9) from the dividend and append it to 253, then repeat: 2539 / 616

Moving on to step 7:
If we divide 2539 by 616, we get 4 and a remainder of 75.
The number 4 becomes the next digit in our result. 
Result so far: 2924.0
If we subtract 2464 from 2539, we get 75.
Fetch the next digit (5) from the dividend, attach it to 75 and continue: 755 / 616

Let's proceed to step 8:
755 divided by 616 is 1 with a remainder of 139.
The number 1 becomes the next digit in our result. 
Result so far: 29241.0
Subtract 616 from 755 to get 139.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1390, and continue the process.

Step 9:
The number 616 fits into 1390 2 times, leaving a remainder of 158.
Write down 2 as next digit of the result. 
Result so far: 29241.2
Subtract 1232 from 1390 to get 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Let's proceed to step 10:
1580 divided by 616 is 2 with a remainder of 348.
Write down 2 as next digit of the result. 
Result so far: 29241.22
If we take 1232 away from 1580, we end up with 348.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3480, and continue the process.

The final result is 29241.22 with a remainder of 0.348.