65664598 ÷ 4 
Our goal is to divide 65664598 by 4.

Going ahead to step 1:
If we divide 6 by 4, we get 1 and a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 4 from 6 to get 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 4

Let's proceed to step 2:
4 can be fit into 25 6 times, resulting in a remainder of 1.
Use 6 as the next digit of our solution. 
Result so far: 16.0
Deduct 24 from 25 and we're left with 1.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 4

Moving on to step 3:
4 goes into 16 4 times with a remainder of 0.
Record the quotient 4 as the next digit in the result. 
Result so far: 164.0
The remainder is 0 after subtracting 16 from 16.
Bring next digit (6) of the dividend behind the 0 and repeat the process: 6 / 4

Let's proceed to step 4:
4 goes into 6 1 times with a remainder of 2.
Record the quotient 1 as the next digit in the result. 
Result so far: 1641.0
If we subtract 4 from 6, we get 2.
Append the next digit (4) from the dividend to 2 and continue with: 24 / 4

Moving on to step 5:
24 divided by 4 is 6 with a remainder of 0.
Put 6 as the next digit of the answer. 
Result so far: 16416.0
If we subtract 24 from 24, we get 0.
Append the next digit (5) from the dividend to 0 and continue with: 5 / 4

Step 6:
5 divided by 4 is 1 with a remainder of 1.
Put 1 as the next digit of the answer. 
Result so far: 164161.0
If we subtract 4 from 5, we get 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 4

Going ahead to step 7:
19 divided by 4 is 4 with a remainder of 3.
Put 4 as the next digit of the answer. 
Result so far: 1641614.0
Deduct 16 from 19 and we're left with 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 4

Moving on to step 8:
When dividing 38 by 4, we get 9 with a remainder of 2.
Put 9 as the next digit of the answer. 
Result so far: 16416149.0
If we subtract 36 from 38, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Advancing to step 9:
The number 4 fits into 20 5 times, leaving a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 16416149.5
The remainder is 0 after subtracting 20 from 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 10:
0 divided by 4 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 16416149.5
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 11:
When dividing 0 by 4, we get 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 16416149.5
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 16416149.5, with a leftover of 0.0.