51660100 ÷ 16 
We're looking to find how many times 16 goes into 51660100.

Going ahead to step 1:
When dividing 5 by 16, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 16

Going ahead to step 2:
The number 16 fits into 51 3 times, leaving a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 48 from 51 and we're left with 3.
Include the next digit (6) from the dividend after 3, then repeat: 36 / 16

Let's proceed to step 3:
16 can be fit into 36 2 times, resulting in a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 32.0
The remainder is 4 after subtracting 32 from 36.
Fetch the next digit (6) from the dividend, attach it to 4 and continue: 46 / 16

Going ahead to step 4:
If we divide 46 by 16, we get 2 and a remainder of 14.
Use 2 as the next digit of our solution. 
Result so far: 322.0
The remainder is 14 after subtracting 32 from 46.
Bring next digit (0) of the dividend behind the 14 and repeat the process: 140 / 16

Let's proceed to step 5:
140 divided by 16 is 8 with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 3228.0
Deduct 128 from 140 and we're left with 12.
Include the next digit (1) from the dividend after 12, then repeat: 121 / 16

Let's proceed to step 6:
121 divided by 16 is 7 with a remainder of 9.
The number 7 becomes the next digit in our result. 
Result so far: 32287.0
The remainder is 9 after subtracting 112 from 121.
Bring next digit (0) of the dividend behind the 9 and repeat the process: 90 / 16

Moving on to step 7:
If we divide 90 by 16, we get 5 and a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 322875.0
Subtract 80 from 90 to get 10.
Grab the next digit (0) from the dividend, add it to 10, then carry on: 100 / 16

Going ahead to step 8:
16 goes into 100 6 times with a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 3228756.0
Deduct 96 from 100 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Step 9:
16 goes into 40 2 times with a remainder of 8.
Write down 2 as next digit of the result. 
Result so far: 3228756.2
The remainder is 8 after subtracting 32 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 10:
16 can be fit into 80 5 times, resulting in a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 3228756.25
If we take 80 away from 80, 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.

Advancing to step 11:
0 divided by 16 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 3228756.25
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.

Step 12:
When dividing 0 by 16, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 3228756.25
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 3228756.25, with a leftover of 0.0.