We're dividing 9106857 by 3 
The aim is to understand the frequency of 3 in 9106857.

Advancing to step 1:
The number 3 fits into 9 3 times, leaving a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
The remainder is 0 after subtracting 9 from 9.
Append the next digit (1) from the dividend to 0 and continue with: 1 / 3

Advancing to step 2:
1 divided by 3 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 30.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (0) from the dividend, attach it to 1 and continue: 10 / 3

On to step 3:
10 divided by 3 is 3 with a remainder of 1.
Use 3 as the next digit of our solution. 
Result so far: 303.0
Subtracting 9 from 10 leaves us with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 3

Step 4:
The number 3 fits into 16 5 times, leaving a remainder of 1.
The number 5 becomes the next digit in our result. 
Result so far: 3035.0
Subtracting 15 from 16 leaves us with 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 3

Advancing to step 5:
3 goes into 18 6 times with a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 30356.0
Deduct 18 from 18 and we're left with 0.
Bring next digit (5) of the dividend behind the 0 and repeat the process: 5 / 3

Let's proceed to step 6:
If we divide 5 by 3, we get 1 and a remainder of 2.
Put 1 as the next digit of the answer. 
Result so far: 303561.0
Subtract 3 from 5 to get 2.
Bring next digit (7) of the dividend behind the 2 and repeat the process: 27 / 3

Let's proceed to step 7:
If we divide 27 by 3, we get 9 and a remainder of 0.
The next digit of our result is 9. 
Result so far: 3035619.0
Subtracting 27 from 27 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 8:
3 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 3035619.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
If we divide 0 by 3, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 3035619.0
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 3035619.0 with a remaining 0.0.