We're dividing 603457 by 86 
Let's see how many times 86 fits into 603457.

Step 1:
When dividing 6 by 86, we get 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Bring next digit (0) of the dividend behind the 6 and repeat the process: 60 / 86

Going ahead to step 2:
When dividing 60 by 86, we get 0 with a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 60 and we're left with 60.
Include the next digit (3) from the dividend after 60, then repeat: 603 / 86

Moving on to step 3:
The number 86 fits into 603 7 times, leaving a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 7.0
The remainder is 1 after subtracting 602 from 603.
Take the next digit (4) from the dividend and append it to 1, then repeat: 14 / 86

Moving on to step 4:
The number 86 fits into 14 0 times, leaving a remainder of 14.
Record the quotient 0 as the next digit in the result. 
Result so far: 70.0
If we take 0 away from 14, we end up with 14.
Include the next digit (5) from the dividend after 14, then repeat: 145 / 86

Let's proceed to step 5:
When dividing 145 by 86, we get 1 with a remainder of 59.
Record the quotient 1 as the next digit in the result. 
Result so far: 701.0
If we take 86 away from 145, we end up with 59.
Grab the next digit (7) from the dividend, add it to 59, then carry on: 597 / 86

Step 6:
86 goes into 597 6 times with a remainder of 81.
Use 6 as the next digit of our solution. 
Result so far: 7016.0
The remainder is 81 after subtracting 516 from 597.
Since there are no more digits in the dividend, we add a zero to the remainder making it 810, and continue the process.

Advancing to step 7:
If we divide 810 by 86, we get 9 and a remainder of 36.
Put 9 as the next digit of the answer. 
Result so far: 7016.9
If we subtract 774 from 810, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 8:
When dividing 360 by 86, we get 4 with a remainder of 16.
Put 4 as the next digit of the answer. 
Result so far: 7016.94
If we subtract 344 from 360, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Moving on to step 9:
When dividing 160 by 86, we get 1 with a remainder of 74.
The next digit of our result is 1. 
Result so far: 7016.941
Subtracting 86 from 160 leaves us with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Moving on to step 10:
When dividing 740 by 86, we get 8 with a remainder of 52.
Record the quotient 8 as the next digit in the result. 
Result so far: 7016.9418
Subtracting 688 from 740 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

On to step 11:
86 can be fit into 520 6 times, resulting in a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 7016.94186
If we subtract 516 from 520, we 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.

Moving on to step 12:
When dividing 40 by 86, we get 0 with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 7016.94186
Subtract 0 from 40 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.

Let's proceed to step 13:
When dividing 400 by 86, we get 4 with a remainder of 56.
Write down 4 as next digit of the result. 
Result so far: 7016.9418604
Subtract 344 from 400 to get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 14:
If we divide 560 by 86, we get 6 and a remainder of 44.
The next digit of our result is 6. 
Result so far: 7016.94186046
Deduct 516 from 560 and we're left 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.

After the division, we end up with 7016.94186046 and a remainder of 4.4e-08.