68616521 divided by 846 
The aim is to understand the frequency of 846 in 68616521.

Let's proceed to step 1:
If we divide 6 by 846, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (8) of the dividend behind the 6 and repeat the process: 68 / 846

Going ahead to step 2:
When dividing 68 by 846, we get 0 with a remainder of 68.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 68, we end up with 68.
Fetch the next digit (6) from the dividend, attach it to 68 and continue: 686 / 846

Moving on to step 3:
The number 846 fits into 686 0 times, leaving a remainder of 686.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 686 leaves us with 686.
Bring next digit (1) of the dividend behind the 686 and repeat the process: 6861 / 846

Going ahead to step 4:
846 goes into 6861 8 times with a remainder of 93.
The next digit of our result is 8. 
Result so far: 8.0
The remainder is 93 after subtracting 6768 from 6861.
Include the next digit (6) from the dividend after 93, then repeat: 936 / 846

Step 5:
If we divide 936 by 846, we get 1 and a remainder of 90.
Record the quotient 1 as the next digit in the result. 
Result so far: 81.0
If we subtract 846 from 936, we get 90.
Take the next digit (5) from the dividend and append it to 90, then repeat: 905 / 846

Let's proceed to step 6:
If we divide 905 by 846, we get 1 and a remainder of 59.
Record the quotient 1 as the next digit in the result. 
Result so far: 811.0
If we take 846 away from 905, we end up with 59.
Take the next digit (2) from the dividend and append it to 59, then repeat: 592 / 846

On to step 7:
If we divide 592 by 846, we get 0 and a remainder of 592.
Record the quotient 0 as the next digit in the result. 
Result so far: 8110.0
If we subtract 0 from 592, we get 592.
Fetch the next digit (1) from the dividend, attach it to 592 and continue: 5921 / 846

Moving on to step 8:
5921 divided by 846 is 6 with a remainder of 845.
The next digit of our result is 6. 
Result so far: 81106.0
If we subtract 5076 from 5921, we get 845.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8450, and continue the process.

Advancing to step 9:
8450 divided by 846 is 9 with a remainder of 836.
Write down 9 as next digit of the result. 
Result so far: 81106.9
Subtract 7614 from 8450 to get 836.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8360, and continue the process.

Going ahead to step 10:
8360 divided by 846 is 9 with a remainder of 746.
Record the quotient 9 as the next digit in the result. 
Result so far: 81106.99
Subtracting 7614 from 8360 leaves us with 746.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7460, and continue the process.

Our division results in 81106.99 with a remaining 0.746.