We divide 16218077 by 648
The aim is to understand the frequency of 648 in 16218077.

Advancing to step 1:
If we divide 1 by 648, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 648

Advancing to step 2:
The number 648 fits into 16 0 times, leaving a remainder of 16.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Append the next digit (2) from the dividend to 16 and continue with: 162 / 648

Step 3:
The number 648 fits into 162 0 times, leaving a remainder of 162.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 162, we get 162.
Fetch the next digit (1) from the dividend, attach it to 162 and continue: 1621 / 648

On to step 4:
1621 divided by 648 is 2 with a remainder of 325.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 325 after subtracting 1296 from 1621.
Fetch the next digit (8) from the dividend, attach it to 325 and continue: 3258 / 648

Going ahead to step 5:
When dividing 3258 by 648, we get 5 with a remainder of 18.
The number 5 becomes the next digit in our result. 
Result so far: 25.0
The remainder is 18 after subtracting 3240 from 3258.
Bring next digit (0) of the dividend behind the 18 and repeat the process: 180 / 648

Going ahead to step 6:
648 goes into 180 0 times with a remainder of 180.
Write down 0 as next digit of the result. 
Result so far: 250.0
If we subtract 0 from 180, we get 180.
Include the next digit (7) from the dividend after 180, then repeat: 1807 / 648

Going ahead to step 7:
1807 divided by 648 is 2 with a remainder of 511.
Write down 2 as next digit of the result. 
Result so far: 2502.0
The remainder is 511 after subtracting 1296 from 1807.
Grab the next digit (7) from the dividend, add it to 511, then carry on: 5117 / 648

Advancing to step 8:
648 goes into 5117 7 times with a remainder of 581.
The number 7 becomes the next digit in our result. 
Result so far: 25027.0
Deduct 4536 from 5117 and we're left with 581.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5810, and continue the process.

On to step 9:
When dividing 5810 by 648, we get 8 with a remainder of 626.
Put 8 as the next digit of the answer. 
Result so far: 25027.8
The remainder is 626 after subtracting 5184 from 5810.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6260, and continue the process.

Advancing to step 10:
648 can be fit into 6260 9 times, resulting in a remainder of 428.
Write down 9 as next digit of the result. 
Result so far: 25027.89
Deduct 5832 from 6260 and we're left with 428.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4280, and continue the process.

Advancing to step 11:
The number 648 fits into 4280 6 times, leaving a remainder of 392.
Write down 6 as next digit of the result. 
Result so far: 25027.896
Deduct 3888 from 4280 and we're left with 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

On to step 12:
The number 648 fits into 3920 6 times, leaving a remainder of 32.
The next digit of our result is 6. 
Result so far: 25027.8966
Subtracting 3888 from 3920 leaves us with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

After the division, we end up with 25027.8966 and a remainder of 0.00032.