629945 divided by 18 
The aim is to understand the frequency of 18 in 629945.

Advancing to step 1:
6 divided by 18 is 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (2) from the dividend and append it to 6, then repeat: 62 / 18

Let's proceed to step 2:
When dividing 62 by 18, we get 3 with a remainder of 8.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 54 away from 62, we end up with 8.
Bring next digit (9) of the dividend behind the 8 and repeat the process: 89 / 18

Moving on to step 3:
When dividing 89 by 18, we get 4 with a remainder of 17.
Record the quotient 4 as the next digit in the result. 
Result so far: 34.0
The remainder is 17 after subtracting 72 from 89.
Take the next digit (9) from the dividend and append it to 17, then repeat: 179 / 18

Let's proceed to step 4:
The number 18 fits into 179 9 times, leaving a remainder of 17.
Record the quotient 9 as the next digit in the result. 
Result so far: 349.0
Subtract 162 from 179 to get 17.
Bring next digit (4) of the dividend behind the 17 and repeat the process: 174 / 18

Going ahead to step 5:
If we divide 174 by 18, we get 9 and a remainder of 12.
Use 9 as the next digit of our solution. 
Result so far: 3499.0
Subtract 162 from 174 to get 12.
Bring next digit (5) of the dividend behind the 12 and repeat the process: 125 / 18

Let's proceed to step 6:
When dividing 125 by 18, we get 6 with a remainder of 17.
Put 6 as the next digit of the answer. 
Result so far: 34996.0
If we subtract 108 from 125, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 7:
If we divide 170 by 18, we get 9 and a remainder of 8.
Use 9 as the next digit of our solution. 
Result so far: 34996.9
The remainder is 8 after subtracting 162 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 8:
18 goes into 80 4 times with a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 34996.94
Deduct 72 from 80 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Let's proceed to step 9:
18 can be fit into 80 4 times, resulting in a remainder of 8.
Use 4 as the next digit of our solution. 
Result so far: 34996.944
The remainder is 8 after subtracting 72 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 34996.944 and a remainder of 0.0008.