We look at the division of 70018560 by 649 
The aim is to understand the frequency of 649 in 70018560.

Advancing to step 1:
649 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Grab the next digit (0) from the dividend, add it to 7, then carry on: 70 / 649

Going ahead to step 2:
The number 649 fits into 70 0 times, leaving a remainder of 70.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 70 after subtracting 0 from 70.
Bring next digit (0) of the dividend behind the 70 and repeat the process: 700 / 649

Going ahead to step 3:
When dividing 700 by 649, we get 1 with a remainder of 51.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 649 away from 700, we end up with 51.
Include the next digit (1) from the dividend after 51, then repeat: 511 / 649

Moving on to step 4:
The number 649 fits into 511 0 times, leaving a remainder of 511.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Subtract 0 from 511 to get 511.
Take the next digit (8) from the dividend and append it to 511, then repeat: 5118 / 649

Let's proceed to step 5:
The number 649 fits into 5118 7 times, leaving a remainder of 575.
The next digit of our result is 7. 
Result so far: 107.0
Subtracting 4543 from 5118 leaves us with 575.
Take the next digit (5) from the dividend and append it to 575, then repeat: 5755 / 649

Step 6:
649 goes into 5755 8 times with a remainder of 563.
Record the quotient 8 as the next digit in the result. 
Result so far: 1078.0
If we take 5192 away from 5755, we end up with 563.
Bring next digit (6) of the dividend behind the 563 and repeat the process: 5636 / 649

Moving on to step 7:
649 can be fit into 5636 8 times, resulting in a remainder of 444.
Put 8 as the next digit of the answer. 
Result so far: 10788.0
Subtract 5192 from 5636 to get 444.
Take the next digit (0) from the dividend and append it to 444, then repeat: 4440 / 649

Moving on to step 8:
If we divide 4440 by 649, we get 6 and a remainder of 546.
Record the quotient 6 as the next digit in the result. 
Result so far: 107886.0
Deduct 3894 from 4440 and we're left with 546.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5460, and continue the process.

Moving on to step 9:
The number 649 fits into 5460 8 times, leaving a remainder of 268.
The next digit of our result is 8. 
Result so far: 107886.8
Subtract 5192 from 5460 to get 268.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2680, and continue the process.

Moving on to step 10:
When dividing 2680 by 649, we get 4 with a remainder of 84.
The next digit of our result is 4. 
Result so far: 107886.84
If we subtract 2596 from 2680, we get 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Going ahead to step 11:
649 goes into 840 1 times with a remainder of 191.
The next digit of our result is 1. 
Result so far: 107886.841
If we subtract 649 from 840, we get 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Step 12:
If we divide 1910 by 649, we get 2 and a remainder of 612.
The next digit of our result is 2. 
Result so far: 107886.8412
Subtracting 1298 from 1910 leaves us with 612.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6120, and continue the process.

Moving on to step 13:
When dividing 6120 by 649, we get 9 with a remainder of 279.
Use 9 as the next digit of our solution. 
Result so far: 107886.84129
Subtract 5841 from 6120 to get 279.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2790, and continue the process.

Let's proceed to step 14:
When dividing 2790 by 649, we get 4 with a remainder of 194.
The number 4 becomes the next digit in our result. 
Result so far: 107886.841294
Subtract 2596 from 2790 to get 194.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1940, and continue the process.

On to step 15:
649 can be fit into 1940 2 times, resulting in a remainder of 642.
Write down 2 as next digit of the result. 
Result so far: 107886.8412942
Subtracting 1298 from 1940 leaves us with 642.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6420, and continue the process.

On to step 16:
When dividing 6420 by 649, we get 9 with a remainder of 579.
Write down 9 as next digit of the result. 
Result so far: 107886.84129429
Subtract 5841 from 6420 to get 579.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5790, and continue the process.

The final result is 107886.84129429 with a remainder of 5.79e-07.