We're dividing 85423957 by 287 
Let's see how many times 287 fits into 85423957.

On to step 1:
When dividing 8 by 287, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 287

Moving on to step 2:
The number 287 fits into 85 0 times, leaving a remainder of 85.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 85 and we're left with 85.
Append the next digit (4) from the dividend to 85 and continue with: 854 / 287

On to step 3:
854 divided by 287 is 2 with a remainder of 280.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 574 from 854 leaves us with 280.
Include the next digit (2) from the dividend after 280, then repeat: 2802 / 287

Step 4:
287 goes into 2802 9 times with a remainder of 219.
The next digit of our result is 9. 
Result so far: 29.0
Subtract 2583 from 2802 to get 219.
Fetch the next digit (3) from the dividend, attach it to 219 and continue: 2193 / 287

On to step 5:
If we divide 2193 by 287, we get 7 and a remainder of 184.
Put 7 as the next digit of the answer. 
Result so far: 297.0
Deduct 2009 from 2193 and we're left with 184.
Bring next digit (9) of the dividend behind the 184 and repeat the process: 1849 / 287

Moving on to step 6:
If we divide 1849 by 287, we get 6 and a remainder of 127.
The next digit of our result is 6. 
Result so far: 2976.0
Subtracting 1722 from 1849 leaves us with 127.
Fetch the next digit (5) from the dividend, attach it to 127 and continue: 1275 / 287

Step 7:
If we divide 1275 by 287, we get 4 and a remainder of 127.
Record the quotient 4 as the next digit in the result. 
Result so far: 29764.0
Deduct 1148 from 1275 and we're left with 127.
Include the next digit (7) from the dividend after 127, then repeat: 1277 / 287

Let's proceed to step 8:
287 can be fit into 1277 4 times, resulting in a remainder of 129.
The number 4 becomes the next digit in our result. 
Result so far: 297644.0
Subtract 1148 from 1277 to get 129.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1290, and continue the process.

Moving on to step 9:
If we divide 1290 by 287, we get 4 and a remainder of 142.
The next digit of our result is 4. 
Result so far: 297644.4
Subtract 1148 from 1290 to get 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

On to step 10:
1420 divided by 287 is 4 with a remainder of 272.
The number 4 becomes the next digit in our result. 
Result so far: 297644.44
Subtracting 1148 from 1420 leaves us with 272.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2720, and continue the process.

The final result is 297644.44 with a remainder of 0.272.