51616165 ÷ 10 
We want to figure out the number of times 51616165 can be divided by 10.

Moving on to step 1:
If we divide 5 by 10, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 10

Step 2:
When dividing 51 by 10, we get 5 with a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 5.0
Subtracting 50 from 51 leaves us with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 10

On to step 3:
When dividing 16 by 10, we get 1 with a remainder of 6.
Put 1 as the next digit of the answer. 
Result so far: 51.0
If we take 10 away from 16, we end up with 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 10

Advancing to step 4:
10 goes into 61 6 times with a remainder of 1.
Write down 6 as next digit of the result. 
Result so far: 516.0
If we subtract 60 from 61, we get 1.
Fetch the next digit (6) from the dividend, attach it to 1 and continue: 16 / 10

On to step 5:
The number 10 fits into 16 1 times, leaving a remainder of 6.
Use 1 as the next digit of our solution. 
Result so far: 5161.0
The remainder is 6 after subtracting 10 from 16.
Append the next digit (1) from the dividend to 6 and continue with: 61 / 10

Moving on to step 6:
The number 10 fits into 61 6 times, leaving a remainder of 1.
Write down 6 as next digit of the result. 
Result so far: 51616.0
Deduct 60 from 61 and we're left with 1.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 10

Going ahead to step 7:
10 goes into 16 1 times with a remainder of 6.
Write down 1 as next digit of the result. 
Result so far: 516161.0
Subtracting 10 from 16 leaves us with 6.
Fetch the next digit (5) from the dividend, attach it to 6 and continue: 65 / 10

Let's proceed to step 8:
10 goes into 65 6 times with a remainder of 5.
Write down 6 as next digit of the result. 
Result so far: 5161616.0
Subtracting 60 from 65 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Moving on to step 9:
50 divided by 10 is 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 5161616.5
If we take 50 away from 50, we end up 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.

Step 10:
10 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 5161616.5
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.

Step 11:
The number 10 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 5161616.5
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 5161616.5 with a remaining 0.0.