80513607 ÷ 257 
Our goal is to divide 80513607 by 257.

Let's proceed to step 1:
When dividing 8 by 257, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (0) from the dividend and append it to 8, then repeat: 80 / 257

Moving on to step 2:
257 goes into 80 0 times with a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 80 after subtracting 0 from 80.
Grab the next digit (5) from the dividend, add it to 80, then carry on: 805 / 257

On to step 3:
If we divide 805 by 257, we get 3 and a remainder of 34.
The next digit of our result is 3. 
Result so far: 3.0
Subtracting 771 from 805 leaves us with 34.
Append the next digit (1) from the dividend to 34 and continue with: 341 / 257

Let's proceed to step 4:
257 can be fit into 341 1 times, resulting in a remainder of 84.
Put 1 as the next digit of the answer. 
Result so far: 31.0
If we take 257 away from 341, we end up with 84.
Append the next digit (3) from the dividend to 84 and continue with: 843 / 257

Step 5:
The number 257 fits into 843 3 times, leaving a remainder of 72.
The number 3 becomes the next digit in our result. 
Result so far: 313.0
Deduct 771 from 843 and we're left with 72.
Fetch the next digit (6) from the dividend, attach it to 72 and continue: 726 / 257

Going ahead to step 6:
257 can be fit into 726 2 times, resulting in a remainder of 212.
Put 2 as the next digit of the answer. 
Result so far: 3132.0
If we subtract 514 from 726, we get 212.
Fetch the next digit (0) from the dividend, attach it to 212 and continue: 2120 / 257

Advancing to step 7:
The number 257 fits into 2120 8 times, leaving a remainder of 64.
Use 8 as the next digit of our solution. 
Result so far: 31328.0
If we subtract 2056 from 2120, we get 64.
Fetch the next digit (7) from the dividend, attach it to 64 and continue: 647 / 257

On to step 8:
The number 257 fits into 647 2 times, leaving a remainder of 133.
Put 2 as the next digit of the answer. 
Result so far: 313282.0
Subtract 514 from 647 to get 133.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1330, and continue the process.

Step 9:
257 can be fit into 1330 5 times, resulting in a remainder of 45.
The next digit of our result is 5. 
Result so far: 313282.5
Subtracting 1285 from 1330 leaves us with 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 10:
257 can be fit into 450 1 times, resulting in a remainder of 193.
Put 1 as the next digit of the answer. 
Result so far: 313282.51
Subtract 257 from 450 to get 193.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

On to step 11:
257 goes into 1930 7 times with a remainder of 131.
The next digit of our result is 7. 
Result so far: 313282.517
If we take 1799 away from 1930, we end up with 131.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1310, and continue the process.

Step 12:
The number 257 fits into 1310 5 times, leaving a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 313282.5175
If we subtract 1285 from 1310, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 13:
257 can be fit into 250 0 times, resulting in a remainder of 250.
The number 0 becomes the next digit in our result. 
Result so far: 313282.5175
Subtracting 0 from 250 leaves us with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Let's proceed to step 14:
If we divide 2500 by 257, we get 9 and a remainder of 187.
Use 9 as the next digit of our solution. 
Result so far: 313282.517509
Subtract 2313 from 2500 to get 187.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1870, and continue the process.

On to step 15:
257 goes into 1870 7 times with a remainder of 71.
The number 7 becomes the next digit in our result. 
Result so far: 313282.5175097
Deduct 1799 from 1870 and we're left with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Let's proceed to step 16:
If we divide 710 by 257, we get 2 and a remainder of 196.
Write down 2 as next digit of the result. 
Result so far: 313282.51750972
If we take 514 away from 710, we end up with 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

The quotient of the division is 313282.51750972, and the remainder is 1.96e-07.