78089985 ÷ 16 
Let's see how many times 16 fits into 78089985.

Advancing to step 1:
16 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 16

Moving on to step 2:
16 goes into 78 4 times with a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we take 64 away from 78, we end up with 14.
Take the next digit (0) from the dividend and append it to 14, then repeat: 140 / 16

Moving on to step 3:
The number 16 fits into 140 8 times, leaving a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 48.0
Subtracting 128 from 140 leaves us with 12.
Append the next digit (8) from the dividend to 12 and continue with: 128 / 16

Moving on to step 4:
The number 16 fits into 128 8 times, leaving a remainder of 0.
Record the quotient 8 as the next digit in the result. 
Result so far: 488.0
Subtract 128 from 128 to get 0.
Take the next digit (9) from the dividend and append it to 0, then repeat: 9 / 16

Going ahead to step 5:
9 divided by 16 is 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 4880.0
Subtract 0 from 9 to get 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 16

On to step 6:
When dividing 99 by 16, we get 6 with a remainder of 3.
Record the quotient 6 as the next digit in the result. 
Result so far: 48806.0
If we subtract 96 from 99, we get 3.
Take the next digit (8) from the dividend and append it to 3, then repeat: 38 / 16

Advancing to step 7:
16 can be fit into 38 2 times, resulting in a remainder of 6.
Record the quotient 2 as the next digit in the result. 
Result so far: 488062.0
Subtracting 32 from 38 leaves us with 6.
Fetch the next digit (5) from the dividend, attach it to 6 and continue: 65 / 16

On to step 8:
If we divide 65 by 16, we get 4 and a remainder of 1.
Use 4 as the next digit of our solution. 
Result so far: 4880624.0
Subtract 64 from 65 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 9:
If we divide 10 by 16, we get 0 and a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 4880624.0
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 10:
If we divide 100 by 16, we get 6 and a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 4880624.06
If we take 96 away from 100, we end up 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.

On to step 11:
When dividing 40 by 16, we get 2 with a remainder of 8.
Use 2 as the next digit of our solution. 
Result so far: 4880624.062
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.

On to step 12:
16 can be fit into 80 5 times, resulting in a remainder of 0.
Write down 5 as next digit of the result. 
Result so far: 4880624.0625
Subtract 80 from 80 to 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 13:
16 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 4880624.0625
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.

Going ahead to step 14:
16 can be fit into 0 0 times, resulting in a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 4880624.0625
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.

Our division results in 4880624.0625 with a remaining 0.0.