639968 divided by 35 
The aim is to understand the frequency of 35 in 639968.

On to step 1:
When dividing 6 by 35, we get 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Bring next digit (3) of the dividend behind the 6 and repeat the process: 63 / 35

Let's proceed to step 2:
35 goes into 63 1 times with a remainder of 28.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 35 from 63 and we're left with 28.
Take the next digit (9) from the dividend and append it to 28, then repeat: 289 / 35

Let's proceed to step 3:
289 divided by 35 is 8 with a remainder of 9.
Record the quotient 8 as the next digit in the result. 
Result so far: 18.0
If we take 280 away from 289, we end up with 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 35

Moving on to step 4:
99 divided by 35 is 2 with a remainder of 29.
The number 2 becomes the next digit in our result. 
Result so far: 182.0
Subtract 70 from 99 to get 29.
Take the next digit (6) from the dividend and append it to 29, then repeat: 296 / 35

Step 5:
When dividing 296 by 35, we get 8 with a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 1828.0
Subtracting 280 from 296 leaves us with 16.
Take the next digit (8) from the dividend and append it to 16, then repeat: 168 / 35

Advancing to step 6:
35 goes into 168 4 times with a remainder of 28.
Use 4 as the next digit of our solution. 
Result so far: 18284.0
If we take 140 away from 168, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Advancing to step 7:
280 divided by 35 is 8 with a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 18284.8
The remainder is 0 after subtracting 280 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
When dividing 0 by 35, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 18284.8
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 9:
If we divide 0 by 35, we get 0 and a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 18284.8
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 18284.8 and a remainder of 0.0.