Let's divide 7088947 by 645
The aim is to understand the frequency of 645 in 7088947.

Let's proceed to step 1:
When dividing 7 by 645, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Fetch the next digit (0) from the dividend, attach it to 7 and continue: 70 / 645

Moving on to step 2:
The number 645 fits into 70 0 times, leaving a remainder of 70.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 70 and we're left with 70.
Bring next digit (8) of the dividend behind the 70 and repeat the process: 708 / 645

On to step 3:
645 goes into 708 1 times with a remainder of 63.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 645 from 708 leaves us with 63.
Grab the next digit (8) from the dividend, add it to 63, then carry on: 638 / 645

Let's proceed to step 4:
When dividing 638 by 645, we get 0 with a remainder of 638.
The next digit of our result is 0. 
Result so far: 10.0
Subtracting 0 from 638 leaves us with 638.
Take the next digit (9) from the dividend and append it to 638, then repeat: 6389 / 645

Step 5:
645 can be fit into 6389 9 times, resulting in a remainder of 584.
Use 9 as the next digit of our solution. 
Result so far: 109.0
Deduct 5805 from 6389 and we're left with 584.
Grab the next digit (4) from the dividend, add it to 584, then carry on: 5844 / 645

Step 6:
645 can be fit into 5844 9 times, resulting in a remainder of 39.
Use 9 as the next digit of our solution. 
Result so far: 1099.0
Deduct 5805 from 5844 and we're left with 39.
Take the next digit (7) from the dividend and append it to 39, then repeat: 397 / 645

Going ahead to step 7:
If we divide 397 by 645, we get 0 and a remainder of 397.
Record the quotient 0 as the next digit in the result. 
Result so far: 10990.0
Deduct 0 from 397 and we're left with 397.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3970, and continue the process.

On to step 8:
3970 divided by 645 is 6 with a remainder of 100.
Put 6 as the next digit of the answer. 
Result so far: 10990.6
Subtract 3870 from 3970 to get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Let's proceed to step 9:
645 goes into 1000 1 times with a remainder of 355.
Write down 1 as next digit of the result. 
Result so far: 10990.61
The remainder is 355 after subtracting 645 from 1000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Advancing to step 10:
The number 645 fits into 3550 5 times, leaving a remainder of 325.
The number 5 becomes the next digit in our result. 
Result so far: 10990.615
Subtract 3225 from 3550 to get 325.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

Advancing to step 11:
645 can be fit into 3250 5 times, resulting in a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 10990.6155
Deduct 3225 from 3250 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

In conclusion, the division gives 10990.6155 with a balance of 0.00025.