26616789 divided by 247 
The aim is to understand the frequency of 247 in 26616789.

Step 1:
If we divide 2 by 247, we get 0 and a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 2, we end up with 2.
Append the next digit (6) from the dividend to 2 and continue with: 26 / 247

Step 2:
The number 247 fits into 26 0 times, leaving a remainder of 26.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 26, we get 26.
Bring next digit (6) of the dividend behind the 26 and repeat the process: 266 / 247

Step 3:
The number 247 fits into 266 1 times, leaving a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 19 after subtracting 247 from 266.
Include the next digit (1) from the dividend after 19, then repeat: 191 / 247

Going ahead to step 4:
247 goes into 191 0 times with a remainder of 191.
The next digit of our result is 0. 
Result so far: 10.0
Deduct 0 from 191 and we're left with 191.
Grab the next digit (6) from the dividend, add it to 191, then carry on: 1916 / 247

Going ahead to step 5:
1916 divided by 247 is 7 with a remainder of 187.
The number 7 becomes the next digit in our result. 
Result so far: 107.0
Deduct 1729 from 1916 and we're left with 187.
Bring next digit (7) of the dividend behind the 187 and repeat the process: 1877 / 247

Moving on to step 6:
1877 divided by 247 is 7 with a remainder of 148.
Use 7 as the next digit of our solution. 
Result so far: 1077.0
Deduct 1729 from 1877 and we're left with 148.
Append the next digit (8) from the dividend to 148 and continue with: 1488 / 247

Advancing to step 7:
If we divide 1488 by 247, we get 6 and a remainder of 6.
The number 6 becomes the next digit in our result. 
Result so far: 10776.0
Deduct 1482 from 1488 and we're left with 6.
Take the next digit (9) from the dividend and append it to 6, then repeat: 69 / 247

On to step 8:
69 divided by 247 is 0 with a remainder of 69.
Write down 0 as next digit of the result. 
Result so far: 107760.0
If we subtract 0 from 69, we get 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Step 9:
The number 247 fits into 690 2 times, leaving a remainder of 196.
Write down 2 as next digit of the result. 
Result so far: 107760.2
The remainder is 196 after subtracting 494 from 690.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Moving on to step 10:
When dividing 1960 by 247, we get 7 with a remainder of 231.
The number 7 becomes the next digit in our result. 
Result so far: 107760.27
If we take 1729 away from 1960, we end up with 231.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2310, and continue the process.

Let's proceed to step 11:
The number 247 fits into 2310 9 times, leaving a remainder of 87.
The next digit of our result is 9. 
Result so far: 107760.279
Subtracting 2223 from 2310 leaves us with 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Going ahead to step 12:
247 can be fit into 870 3 times, resulting in a remainder of 129.
The next digit of our result is 3. 
Result so far: 107760.2793
The remainder is 129 after subtracting 741 from 870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1290, and continue the process.

Going ahead to step 13:
When dividing 1290 by 247, we get 5 with a remainder of 55.
The number 5 becomes the next digit in our result. 
Result so far: 107760.27935
Deduct 1235 from 1290 and we're left with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Step 14:
247 goes into 550 2 times with a remainder of 56.
Record the quotient 2 as the next digit in the result. 
Result so far: 107760.279352
If we take 494 away from 550, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 15:
560 divided by 247 is 2 with a remainder of 66.
Put 2 as the next digit of the answer. 
Result so far: 107760.2793522
Subtract 494 from 560 to get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

The final outcome is 107760.2793522, with a leftover of 6.6e-07.