We look at the division of 258187 by 71 
We want to figure out the number of times 258187 can be divided by 71.

Step 1:
When dividing 2 by 71, we get 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 71

On to step 2:
The number 71 fits into 25 0 times, leaving a remainder of 25.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 25, we end up with 25.
Append the next digit (8) from the dividend to 25 and continue with: 258 / 71

Moving on to step 3:
When dividing 258 by 71, we get 3 with a remainder of 45.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 213 away from 258, we end up with 45.
Bring next digit (1) of the dividend behind the 45 and repeat the process: 451 / 71

Moving on to step 4:
If we divide 451 by 71, we get 6 and a remainder of 25.
The next digit of our result is 6. 
Result so far: 36.0
Subtract 426 from 451 to get 25.
Fetch the next digit (8) from the dividend, attach it to 25 and continue: 258 / 71

Advancing to step 5:
If we divide 258 by 71, we get 3 and a remainder of 45.
The next digit of our result is 3. 
Result so far: 363.0
Subtracting 213 from 258 leaves us with 45.
Fetch the next digit (7) from the dividend, attach it to 45 and continue: 457 / 71

Moving on to step 6:
71 goes into 457 6 times with a remainder of 31.
The next digit of our result is 6. 
Result so far: 3636.0
Deduct 426 from 457 and we're left with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Going ahead to step 7:
310 divided by 71 is 4 with a remainder of 26.
Write down 4 as next digit of the result. 
Result so far: 3636.4
Subtracting 284 from 310 leaves us with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 8:
If we divide 260 by 71, we get 3 and a remainder of 47.
Use 3 as the next digit of our solution. 
Result so far: 3636.43
Subtract 213 from 260 to get 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Step 9:
If we divide 470 by 71, we get 6 and a remainder of 44.
Use 6 as the next digit of our solution. 
Result so far: 3636.436
Subtracting 426 from 470 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 10:
When dividing 440 by 71, we get 6 with a remainder of 14.
Put 6 as the next digit of the answer. 
Result so far: 3636.4366
Subtract 426 from 440 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

After the division, we end up with 3636.4366 and a remainder of 0.00014.