151811 ÷ 80 
We're looking to find how many times 80 goes into 151811.

Let's proceed to step 1:
The number 80 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Fetch the next digit (5) from the dividend, attach it to 1 and continue: 15 / 80

On to step 2:
80 goes into 15 0 times with a remainder of 15.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 15 to get 15.
Take the next digit (1) from the dividend and append it to 15, then repeat: 151 / 80

Going ahead to step 3:
When dividing 151 by 80, we get 1 with a remainder of 71.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 80 from 151 leaves us with 71.
Fetch the next digit (8) from the dividend, attach it to 71 and continue: 718 / 80

Step 4:
If we divide 718 by 80, we get 8 and a remainder of 78.
Use 8 as the next digit of our solution. 
Result so far: 18.0
Subtracting 640 from 718 leaves us with 78.
Take the next digit (1) from the dividend and append it to 78, then repeat: 781 / 80

Let's proceed to step 5:
The number 80 fits into 781 9 times, leaving a remainder of 61.
Put 9 as the next digit of the answer. 
Result so far: 189.0
Subtract 720 from 781 to get 61.
Bring next digit (1) of the dividend behind the 61 and repeat the process: 611 / 80

On to step 6:
When dividing 611 by 80, we get 7 with a remainder of 51.
Put 7 as the next digit of the answer. 
Result so far: 1897.0
If we take 560 away from 611, we end up with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Going ahead to step 7:
The number 80 fits into 510 6 times, leaving a remainder of 30.
The number 6 becomes the next digit in our result. 
Result so far: 1897.6
If we subtract 480 from 510, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 8:
300 divided by 80 is 3 with a remainder of 60.
Record the quotient 3 as the next digit in the result. 
Result so far: 1897.63
Subtracting 240 from 300 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 9:
When dividing 600 by 80, we get 7 with a remainder of 40.
Record the quotient 7 as the next digit in the result. 
Result so far: 1897.637
If we take 560 away from 600, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 10:
If we divide 400 by 80, we get 5 and a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 1897.6375
Subtract 400 from 400 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 11:
80 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 1897.6375
If we take 0 away from 0, 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.

Going ahead to step 12:
When dividing 0 by 80, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 1897.6375
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.

After the division, we end up with 1897.6375 and a remainder of 0.0.