7618527 ÷ 309 
The aim is to understand the frequency of 309 in 7618527.

Advancing to step 1:
If we divide 7 by 309, we get 0 and a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Grab the next digit (6) from the dividend, add it to 7, then carry on: 76 / 309

Advancing to step 2:
The number 309 fits into 76 0 times, leaving a remainder of 76.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 76 after subtracting 0 from 76.
Grab the next digit (1) from the dividend, add it to 76, then carry on: 761 / 309

On to step 3:
The number 309 fits into 761 2 times, leaving a remainder of 143.
The next digit of our result is 2. 
Result so far: 2.0
The remainder is 143 after subtracting 618 from 761.
Append the next digit (8) from the dividend to 143 and continue with: 1438 / 309

Step 4:
1438 divided by 309 is 4 with a remainder of 202.
Write down 4 as next digit of the result. 
Result so far: 24.0
The remainder is 202 after subtracting 1236 from 1438.
Bring next digit (5) of the dividend behind the 202 and repeat the process: 2025 / 309

Step 5:
When dividing 2025 by 309, we get 6 with a remainder of 171.
Write down 6 as next digit of the result. 
Result so far: 246.0
Subtract 1854 from 2025 to get 171.
Append the next digit (2) from the dividend to 171 and continue with: 1712 / 309

Advancing to step 6:
309 goes into 1712 5 times with a remainder of 167.
Write down 5 as next digit of the result. 
Result so far: 2465.0
Subtracting 1545 from 1712 leaves us with 167.
Bring next digit (7) of the dividend behind the 167 and repeat the process: 1677 / 309

Advancing to step 7:
When dividing 1677 by 309, we get 5 with a remainder of 132.
Write down 5 as next digit of the result. 
Result so far: 24655.0
If we take 1545 away from 1677, we end up with 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Moving on to step 8:
309 goes into 1320 4 times with a remainder of 84.
Put 4 as the next digit of the answer. 
Result so far: 24655.4
If we take 1236 away from 1320, we end up with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Step 9:
309 goes into 840 2 times with a remainder of 222.
Use 2 as the next digit of our solution. 
Result so far: 24655.42
If we take 618 away from 840, we end up with 222.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2220, and continue the process.

Moving on to step 10:
The number 309 fits into 2220 7 times, leaving a remainder of 57.
The number 7 becomes the next digit in our result. 
Result so far: 24655.427
If we subtract 2163 from 2220, we get 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Step 11:
If we divide 570 by 309, we get 1 and a remainder of 261.
The number 1 becomes the next digit in our result. 
Result so far: 24655.4271
Subtracting 309 from 570 leaves us with 261.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2610, and continue the process.

Advancing to step 12:
If we divide 2610 by 309, we get 8 and a remainder of 138.
Put 8 as the next digit of the answer. 
Result so far: 24655.42718
Deduct 2472 from 2610 and we're left with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Step 13:
The number 309 fits into 1380 4 times, leaving a remainder of 144.
Record the quotient 4 as the next digit in the result. 
Result so far: 24655.427184
Subtracting 1236 from 1380 leaves us with 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Going ahead to step 14:
309 can be fit into 1440 4 times, resulting in a remainder of 204.
Put 4 as the next digit of the answer. 
Result so far: 24655.4271844
If we subtract 1236 from 1440, we get 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

The final outcome is 24655.4271844, with a leftover of 2.04e-06.