We look at the division of 70480867 by 641 
The aim is to understand the frequency of 641 in 70480867.

Going ahead to step 1:
7 divided by 641 is 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Bring next digit (0) of the dividend behind the 7 and repeat the process: 70 / 641

Step 2:
If we divide 70 by 641, we get 0 and a remainder of 70.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 70 leaves us with 70.
Grab the next digit (4) from the dividend, add it to 70, then carry on: 704 / 641

Let's proceed to step 3:
The number 641 fits into 704 1 times, leaving a remainder of 63.
The next digit of our result is 1. 
Result so far: 1.0
If we take 641 away from 704, we end up with 63.
Grab the next digit (8) from the dividend, add it to 63, then carry on: 638 / 641

Advancing to step 4:
638 divided by 641 is 0 with a remainder of 638.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we take 0 away from 638, we end up with 638.
Bring next digit (0) of the dividend behind the 638 and repeat the process: 6380 / 641

Let's proceed to step 5:
641 goes into 6380 9 times with a remainder of 611.
Record the quotient 9 as the next digit in the result. 
Result so far: 109.0
Deduct 5769 from 6380 and we're left with 611.
Take the next digit (8) from the dividend and append it to 611, then repeat: 6118 / 641

Going ahead to step 6:
641 can be fit into 6118 9 times, resulting in a remainder of 349.
Use 9 as the next digit of our solution. 
Result so far: 1099.0
Deduct 5769 from 6118 and we're left with 349.
Take the next digit (6) from the dividend and append it to 349, then repeat: 3496 / 641

Step 7:
3496 divided by 641 is 5 with a remainder of 291.
Put 5 as the next digit of the answer. 
Result so far: 10995.0
If we subtract 3205 from 3496, we get 291.
Grab the next digit (7) from the dividend, add it to 291, then carry on: 2917 / 641

On to step 8:
2917 divided by 641 is 4 with a remainder of 353.
The number 4 becomes the next digit in our result. 
Result so far: 109954.0
The remainder is 353 after subtracting 2564 from 2917.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3530, and continue the process.

Advancing to step 9:
641 can be fit into 3530 5 times, resulting in a remainder of 325.
Use 5 as the next digit of our solution. 
Result so far: 109954.5
Subtracting 3205 from 3530 leaves us with 325.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

On to step 10:
When dividing 3250 by 641, we get 5 with a remainder of 45.
Use 5 as the next digit of our solution. 
Result so far: 109954.55
The remainder is 45 after subtracting 3205 from 3250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

The final outcome is 109954.55, with a leftover of 0.045.