We divide 99603966 by 60
We want to divide 99603966 by 60.

Moving on to step 1:
9 divided by 60 is 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Fetch the next digit (9) from the dividend, attach it to 9 and continue: 99 / 60

Step 2:
60 goes into 99 1 times with a remainder of 39.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Deduct 60 from 99 and we're left with 39.
Include the next digit (6) from the dividend after 39, then repeat: 396 / 60

Going ahead to step 3:
60 goes into 396 6 times with a remainder of 36.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
Subtracting 360 from 396 leaves us with 36.
Bring next digit (0) of the dividend behind the 36 and repeat the process: 360 / 60

Let's proceed to step 4:
60 goes into 360 6 times with a remainder of 0.
The next digit of our result is 6. 
Result so far: 166.0
If we subtract 360 from 360, we get 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 60

On to step 5:
60 can be fit into 3 0 times, resulting in a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 1660.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (9) from the dividend and append it to 3, then repeat: 39 / 60

Advancing to step 6:
If we divide 39 by 60, we get 0 and a remainder of 39.
Write down 0 as next digit of the result. 
Result so far: 16600.0
Subtracting 0 from 39 leaves us with 39.
Take the next digit (6) from the dividend and append it to 39, then repeat: 396 / 60

Advancing to step 7:
396 divided by 60 is 6 with a remainder of 36.
Record the quotient 6 as the next digit in the result. 
Result so far: 166006.0
If we subtract 360 from 396, we get 36.
Bring next digit (6) of the dividend behind the 36 and repeat the process: 366 / 60

Let's proceed to step 8:
60 can be fit into 366 6 times, resulting in a remainder of 6.
The number 6 becomes the next digit in our result. 
Result so far: 1660066.0
The remainder is 6 after subtracting 360 from 366.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

On to step 9:
60 can be fit into 60 1 times, resulting in a remainder of 0.
Write down 1 as next digit of the result. 
Result so far: 1660066.1
Deduct 60 from 60 and we're left 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.

On to step 10:
The number 60 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 1660066.1
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.

Moving on to step 11:
The number 60 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 1660066.1
Deduct 0 from 0 and we're left 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.

In conclusion, the division gives 1660066.1 with a balance of 0.0.