We look at the division of 258595 by 51 
We want to divide 258595 by 51.

On to step 1:
2 divided by 51 is 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.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 51

Going ahead to step 2:
51 goes into 25 0 times with a remainder of 25.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 25, we get 25.
Include the next digit (8) from the dividend after 25, then repeat: 258 / 51

Let's proceed to step 3:
If we divide 258 by 51, we get 5 and a remainder of 3.
The next digit of our result is 5. 
Result so far: 5.0
Subtract 255 from 258 to get 3.
Take the next digit (5) from the dividend and append it to 3, then repeat: 35 / 51

Advancing to step 4:
When dividing 35 by 51, we get 0 with a remainder of 35.
Use 0 as the next digit of our solution. 
Result so far: 50.0
If we take 0 away from 35, we end up with 35.
Grab the next digit (9) from the dividend, add it to 35, then carry on: 359 / 51

Let's proceed to step 5:
51 goes into 359 7 times with a remainder of 2.
Write down 7 as next digit of the result. 
Result so far: 507.0
Subtracting 357 from 359 leaves us with 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 51

Step 6:
When dividing 25 by 51, we get 0 with a remainder of 25.
The number 0 becomes the next digit in our result. 
Result so far: 5070.0
Deduct 0 from 25 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 7:
51 goes into 250 4 times with a remainder of 46.
Put 4 as the next digit of the answer. 
Result so far: 5070.4
Deduct 204 from 250 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 8:
If we divide 460 by 51, we get 9 and a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 5070.49
Subtracting 459 from 460 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 9:
51 goes into 10 0 times with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 5070.49
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 10:
The number 51 fits into 100 1 times, leaving a remainder of 49.
The next digit of our result is 1. 
Result so far: 5070.4901
Deduct 51 from 100 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Moving on to step 11:
51 can be fit into 490 9 times, resulting in a remainder of 31.
Use 9 as the next digit of our solution. 
Result so far: 5070.49019
Subtract 459 from 490 to get 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 12:
The number 51 fits into 310 6 times, leaving a remainder of 4.
Put 6 as the next digit of the answer. 
Result so far: 5070.490196
Subtract 306 from 310 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 13:
When dividing 40 by 51, we get 0 with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 5070.490196
If we take 0 away from 40, 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.

Let's proceed to step 14:
When dividing 400 by 51, we get 7 with a remainder of 43.
The number 7 becomes the next digit in our result. 
Result so far: 5070.49019607
If we take 357 away from 400, we end up with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

The quotient of the division is 5070.49019607, and the remainder is 4.3e-08.