361521 ÷ 80 
Let's see how many times 80 fits into 361521.

Moving on to step 1:
The number 80 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Grab the next digit (6) from the dividend, add it to 3, then carry on: 36 / 80

Step 2:
When dividing 36 by 80, we get 0 with a remainder of 36.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 36, we end up with 36.
Take the next digit (1) from the dividend and append it to 36, then repeat: 361 / 80

Going ahead to step 3:
When dividing 361 by 80, we get 4 with a remainder of 41.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtracting 320 from 361 leaves us with 41.
Take the next digit (5) from the dividend and append it to 41, then repeat: 415 / 80

Step 4:
415 divided by 80 is 5 with a remainder of 15.
The next digit of our result is 5. 
Result so far: 45.0
If we take 400 away from 415, we end up with 15.
Fetch the next digit (2) from the dividend, attach it to 15 and continue: 152 / 80

On to step 5:
When dividing 152 by 80, we get 1 with a remainder of 72.
Record the quotient 1 as the next digit in the result. 
Result so far: 451.0
If we take 80 away from 152, we end up with 72.
Grab the next digit (1) from the dividend, add it to 72, then carry on: 721 / 80

Going ahead to step 6:
80 goes into 721 9 times with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 4519.0
The remainder is 1 after subtracting 720 from 721.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Moving on to step 7:
If we divide 10 by 80, we get 0 and a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 4519.0
Subtracting 0 from 10 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
80 can be fit into 100 1 times, resulting in a remainder of 20.
The number 1 becomes the next digit in our result. 
Result so far: 4519.01
Subtracting 80 from 100 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 9:
200 divided by 80 is 2 with a remainder of 40.
Use 2 as the next digit of our solution. 
Result so far: 4519.012
Subtract 160 from 200 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 10:
80 can be fit into 400 5 times, resulting in a remainder of 0.
The next digit of our result is 5. 
Result so far: 4519.0125
Deduct 400 from 400 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.

On to step 11:
80 goes into 0 0 times with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 4519.0125
Subtract 0 from 0 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.

Let's proceed to step 12:
When dividing 0 by 80, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 4519.0125
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.

After the division, we end up with 4519.0125 and a remainder of 0.0.