We look at the division of 42799070 by 306 
The aim is to understand the frequency of 306 in 42799070.

Advancing to step 1:
306 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Append the next digit (2) from the dividend to 4 and continue with: 42 / 306

Moving on to step 2:
306 goes into 42 0 times with a remainder of 42.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 42 after subtracting 0 from 42.
Grab the next digit (7) from the dividend, add it to 42, then carry on: 427 / 306

Step 3:
The number 306 fits into 427 1 times, leaving a remainder of 121.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 306 from 427 leaves us with 121.
Bring next digit (9) of the dividend behind the 121 and repeat the process: 1219 / 306

On to step 4:
1219 divided by 306 is 3 with a remainder of 301.
Record the quotient 3 as the next digit in the result. 
Result so far: 13.0
If we take 918 away from 1219, we end up with 301.
Take the next digit (9) from the dividend and append it to 301, then repeat: 3019 / 306

Step 5:
3019 divided by 306 is 9 with a remainder of 265.
Write down 9 as next digit of the result. 
Result so far: 139.0
Subtract 2754 from 3019 to get 265.
Grab the next digit (0) from the dividend, add it to 265, then carry on: 2650 / 306

Advancing to step 6:
2650 divided by 306 is 8 with a remainder of 202.
Record the quotient 8 as the next digit in the result. 
Result so far: 1398.0
If we subtract 2448 from 2650, we get 202.
Grab the next digit (7) from the dividend, add it to 202, then carry on: 2027 / 306

Going ahead to step 7:
If we divide 2027 by 306, we get 6 and a remainder of 191.
The next digit of our result is 6. 
Result so far: 13986.0
Deduct 1836 from 2027 and we're left with 191.
Take the next digit (0) from the dividend and append it to 191, then repeat: 1910 / 306

On to step 8:
If we divide 1910 by 306, we get 6 and a remainder of 74.
The number 6 becomes the next digit in our result. 
Result so far: 139866.0
If we subtract 1836 from 1910, we get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Step 9:
306 can be fit into 740 2 times, resulting in a remainder of 128.
The next digit of our result is 2. 
Result so far: 139866.2
Deduct 612 from 740 and we're left with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Let's proceed to step 10:
306 goes into 1280 4 times with a remainder of 56.
Use 4 as the next digit of our solution. 
Result so far: 139866.24
Subtract 1224 from 1280 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 11:
306 goes into 560 1 times with a remainder of 254.
Write down 1 as next digit of the result. 
Result so far: 139866.241
If we subtract 306 from 560, we get 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Let's proceed to step 12:
The number 306 fits into 2540 8 times, leaving a remainder of 92.
Put 8 as the next digit of the answer. 
Result so far: 139866.2418
The remainder is 92 after subtracting 2448 from 2540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Going ahead to step 13:
920 divided by 306 is 3 with a remainder of 2.
Use 3 as the next digit of our solution. 
Result so far: 139866.24183
The remainder is 2 after subtracting 918 from 920.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 14:
If we divide 20 by 306, we get 0 and a remainder of 20.
Use 0 as the next digit of our solution. 
Result so far: 139866.24183
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 15:
If we divide 200 by 306, we get 0 and a remainder of 200.
Write down 0 as next digit of the result. 
Result so far: 139866.24183
Subtracting 0 from 200 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Our division results in 139866.24183 with a remaining 2e-06.