153947 divided by 80 
We want to figure out the number of times 153947 can be divided by 80.

On to step 1:
1 divided by 80 is 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 80

Step 2:
If we divide 15 by 80, we get 0 and a remainder of 15.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 15 to get 15.
Include the next digit (3) from the dividend after 15, then repeat: 153 / 80

Moving on to step 3:
80 goes into 153 1 times with a remainder of 73.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 80 from 153, we get 73.
Grab the next digit (9) from the dividend, add it to 73, then carry on: 739 / 80

Moving on to step 4:
80 can be fit into 739 9 times, resulting in a remainder of 19.
Put 9 as the next digit of the answer. 
Result so far: 19.0
Subtract 720 from 739 to get 19.
Append the next digit (4) from the dividend to 19 and continue with: 194 / 80

Moving on to step 5:
When dividing 194 by 80, we get 2 with a remainder of 34.
The number 2 becomes the next digit in our result. 
Result so far: 192.0
If we subtract 160 from 194, we get 34.
Bring next digit (7) of the dividend behind the 34 and repeat the process: 347 / 80

On to step 6:
80 goes into 347 4 times with a remainder of 27.
Record the quotient 4 as the next digit in the result. 
Result so far: 1924.0
If we take 320 away from 347, we end up with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Moving on to step 7:
80 can be fit into 270 3 times, resulting in a remainder of 30.
The next digit of our result is 3. 
Result so far: 1924.3
Subtracting 240 from 270 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 8:
If we divide 300 by 80, we get 3 and a remainder of 60.
Write down 3 as next digit of the result. 
Result so far: 1924.33
If we subtract 240 from 300, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

The quotient of the division is 1924.33, and the remainder is 0.06.