77164641 divided by 975 
We're looking to find how many times 975 goes into 77164641.

On to step 1:
7 divided by 975 is 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 975

Let's proceed to step 2:
When dividing 77 by 975, we get 0 with a remainder of 77.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 77, we end up with 77.
Take the next digit (1) from the dividend and append it to 77, then repeat: 771 / 975

On to step 3:
975 goes into 771 0 times with a remainder of 771.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 771 and we're left with 771.
Append the next digit (6) from the dividend to 771 and continue with: 7716 / 975

Moving on to step 4:
When dividing 7716 by 975, we get 7 with a remainder of 891.
Use 7 as the next digit of our solution. 
Result so far: 7.0
The remainder is 891 after subtracting 6825 from 7716.
Bring next digit (4) of the dividend behind the 891 and repeat the process: 8914 / 975

Let's proceed to step 5:
8914 divided by 975 is 9 with a remainder of 139.
The next digit of our result is 9. 
Result so far: 79.0
Deduct 8775 from 8914 and we're left with 139.
Fetch the next digit (6) from the dividend, attach it to 139 and continue: 1396 / 975

Step 6:
When dividing 1396 by 975, we get 1 with a remainder of 421.
The number 1 becomes the next digit in our result. 
Result so far: 791.0
Subtract 975 from 1396 to get 421.
Append the next digit (4) from the dividend to 421 and continue with: 4214 / 975

Let's proceed to step 7:
975 goes into 4214 4 times with a remainder of 314.
Put 4 as the next digit of the answer. 
Result so far: 7914.0
The remainder is 314 after subtracting 3900 from 4214.
Fetch the next digit (1) from the dividend, attach it to 314 and continue: 3141 / 975

Step 8:
When dividing 3141 by 975, we get 3 with a remainder of 216.
The number 3 becomes the next digit in our result. 
Result so far: 79143.0
If we take 2925 away from 3141, we end up with 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Let's proceed to step 9:
975 can be fit into 2160 2 times, resulting in a remainder of 210.
The next digit of our result is 2. 
Result so far: 79143.2
Subtracting 1950 from 2160 leaves us with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Advancing to step 10:
975 can be fit into 2100 2 times, resulting in a remainder of 150.
Record the quotient 2 as the next digit in the result. 
Result so far: 79143.22
The remainder is 150 after subtracting 1950 from 2100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

The final outcome is 79143.22, with a leftover of 0.15.