We divide 68277040 by 645
The aim is to understand the frequency of 645 in 68277040.

Step 1:
When dividing 6 by 645, we get 0 with a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Grab the next digit (8) from the dividend, add it to 6, then carry on: 68 / 645

On to step 2:
The number 645 fits into 68 0 times, leaving a remainder of 68.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 68, we get 68.
Bring next digit (2) of the dividend behind the 68 and repeat the process: 682 / 645

On to step 3:
682 divided by 645 is 1 with a remainder of 37.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 37 after subtracting 645 from 682.
Fetch the next digit (7) from the dividend, attach it to 37 and continue: 377 / 645

Step 4:
If we divide 377 by 645, we get 0 and a remainder of 377.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
If we subtract 0 from 377, we get 377.
Fetch the next digit (7) from the dividend, attach it to 377 and continue: 3777 / 645

Step 5:
The number 645 fits into 3777 5 times, leaving a remainder of 552.
The number 5 becomes the next digit in our result. 
Result so far: 105.0
Subtract 3225 from 3777 to get 552.
Take the next digit (0) from the dividend and append it to 552, then repeat: 5520 / 645

Let's proceed to step 6:
645 goes into 5520 8 times with a remainder of 360.
Record the quotient 8 as the next digit in the result. 
Result so far: 1058.0
Subtract 5160 from 5520 to get 360.
Append the next digit (4) from the dividend to 360 and continue with: 3604 / 645

Moving on to step 7:
If we divide 3604 by 645, we get 5 and a remainder of 379.
The next digit of our result is 5. 
Result so far: 10585.0
Subtract 3225 from 3604 to get 379.
Fetch the next digit (0) from the dividend, attach it to 379 and continue: 3790 / 645

Going ahead to step 8:
3790 divided by 645 is 5 with a remainder of 565.
The next digit of our result is 5. 
Result so far: 105855.0
Deduct 3225 from 3790 and we're left with 565.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5650, and continue the process.

Moving on to step 9:
When dividing 5650 by 645, we get 8 with a remainder of 490.
Write down 8 as next digit of the result. 
Result so far: 105855.8
Deduct 5160 from 5650 and we're left with 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

Let's proceed to step 10:
If we divide 4900 by 645, we get 7 and a remainder of 385.
The number 7 becomes the next digit in our result. 
Result so far: 105855.87
The remainder is 385 after subtracting 4515 from 4900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3850, and continue the process.

On to step 11:
3850 divided by 645 is 5 with a remainder of 625.
Write down 5 as next digit of the result. 
Result so far: 105855.875
If we subtract 3225 from 3850, we get 625.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6250, and continue the process.

On to step 12:
645 can be fit into 6250 9 times, resulting in a remainder of 445.
Record the quotient 9 as the next digit in the result. 
Result so far: 105855.8759
The remainder is 445 after subtracting 5805 from 6250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4450, and continue the process.

Let's proceed to step 13:
If we divide 4450 by 645, we get 6 and a remainder of 580.
The next digit of our result is 6. 
Result so far: 105855.87596
Subtract 3870 from 4450 to get 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Moving on to step 14:
The number 645 fits into 5800 8 times, leaving a remainder of 640.
Use 8 as the next digit of our solution. 
Result so far: 105855.875968
Subtract 5160 from 5800 to get 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

Step 15:
6400 divided by 645 is 9 with a remainder of 595.
Put 9 as the next digit of the answer. 
Result so far: 105855.8759689
If we subtract 5805 from 6400, we get 595.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5950, and continue the process.

Going ahead to step 16:
When dividing 5950 by 645, we get 9 with a remainder of 145.
Write down 9 as next digit of the result. 
Result so far: 105855.87596899
If we subtract 5805 from 5950, we get 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

After the division, we end up with 105855.87596899 and a remainder of 1.45e-07.