We divide 55960645 by 646
The aim is to understand the frequency of 646 in 55960645.

Let's proceed to step 1:
5 divided by 646 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 646

Going ahead to step 2:
The number 646 fits into 55 0 times, leaving a remainder of 55.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 55, we get 55.
Bring next digit (9) of the dividend behind the 55 and repeat the process: 559 / 646

Let's proceed to step 3:
646 can be fit into 559 0 times, resulting in a remainder of 559.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 559 after subtracting 0 from 559.
Take the next digit (6) from the dividend and append it to 559, then repeat: 5596 / 646

Going ahead to step 4:
646 goes into 5596 8 times with a remainder of 428.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
The remainder is 428 after subtracting 5168 from 5596.
Append the next digit (0) from the dividend to 428 and continue with: 4280 / 646

On to step 5:
The number 646 fits into 4280 6 times, leaving a remainder of 404.
Put 6 as the next digit of the answer. 
Result so far: 86.0
Subtracting 3876 from 4280 leaves us with 404.
Append the next digit (6) from the dividend to 404 and continue with: 4046 / 646

Step 6:
If we divide 4046 by 646, we get 6 and a remainder of 170.
Use 6 as the next digit of our solution. 
Result so far: 866.0
Subtract 3876 from 4046 to get 170.
Bring next digit (4) of the dividend behind the 170 and repeat the process: 1704 / 646

Moving on to step 7:
646 can be fit into 1704 2 times, resulting in a remainder of 412.
The next digit of our result is 2. 
Result so far: 8662.0
Subtracting 1292 from 1704 leaves us with 412.
Bring next digit (5) of the dividend behind the 412 and repeat the process: 4125 / 646

Let's proceed to step 8:
646 can be fit into 4125 6 times, resulting in a remainder of 249.
The number 6 becomes the next digit in our result. 
Result so far: 86626.0
Deduct 3876 from 4125 and we're left with 249.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2490, and continue the process.

Moving on to step 9:
646 goes into 2490 3 times with a remainder of 552.
Record the quotient 3 as the next digit in the result. 
Result so far: 86626.3
Deduct 1938 from 2490 and we're left with 552.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5520, and continue the process.

On to step 10:
646 goes into 5520 8 times with a remainder of 352.
The next digit of our result is 8. 
Result so far: 86626.38
If we subtract 5168 from 5520, we get 352.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3520, and continue the process.

Moving on to step 11:
646 goes into 3520 5 times with a remainder of 290.
The number 5 becomes the next digit in our result. 
Result so far: 86626.385
Subtract 3230 from 3520 to get 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Going ahead to step 12:
2900 divided by 646 is 4 with a remainder of 316.
The next digit of our result is 4. 
Result so far: 86626.3854
Subtracting 2584 from 2900 leaves us with 316.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3160, and continue the process.

Let's proceed to step 13:
646 can be fit into 3160 4 times, resulting in a remainder of 576.
Record the quotient 4 as the next digit in the result. 
Result so far: 86626.38544
The remainder is 576 after subtracting 2584 from 3160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5760, and continue the process.

The final outcome is 86626.38544, with a leftover of 0.000576.