We look at the division of 450213 by 87 
Our goal is to divide 450213 by 87.

Let's proceed to step 1:
If we divide 4 by 87, we get 0 and a remainder of 4.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Append the next digit (5) from the dividend to 4 and continue with: 45 / 87

On to step 2:
87 can be fit into 45 0 times, resulting in a remainder of 45.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 45, we get 45.
Append the next digit (0) from the dividend to 45 and continue with: 450 / 87

On to step 3:
When dividing 450 by 87, we get 5 with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtracting 435 from 450 leaves us with 15.
Take the next digit (2) from the dividend and append it to 15, then repeat: 152 / 87

Moving on to step 4:
87 goes into 152 1 times with a remainder of 65.
The next digit of our result is 1. 
Result so far: 51.0
Subtract 87 from 152 to get 65.
Bring next digit (1) of the dividend behind the 65 and repeat the process: 651 / 87

Going ahead to step 5:
If we divide 651 by 87, we get 7 and a remainder of 42.
Record the quotient 7 as the next digit in the result. 
Result so far: 517.0
If we subtract 609 from 651, we get 42.
Grab the next digit (3) from the dividend, add it to 42, then carry on: 423 / 87

Going ahead to step 6:
If we divide 423 by 87, we get 4 and a remainder of 75.
Put 4 as the next digit of the answer. 
Result so far: 5174.0
If we subtract 348 from 423, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Step 7:
87 goes into 750 8 times with a remainder of 54.
The next digit of our result is 8. 
Result so far: 5174.8
Subtracting 696 from 750 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Going ahead to step 8:
87 goes into 540 6 times with a remainder of 18.
Put 6 as the next digit of the answer. 
Result so far: 5174.86
If we take 522 away from 540, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 9:
When dividing 180 by 87, we get 2 with a remainder of 6.
Use 2 as the next digit of our solution. 
Result so far: 5174.862
The remainder is 6 after subtracting 174 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 10:
If we divide 60 by 87, we get 0 and a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 5174.862
If we take 0 away from 60, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 11:
The number 87 fits into 600 6 times, leaving a remainder of 78.
The next digit of our result is 6. 
Result so far: 5174.86206
The remainder is 78 after subtracting 522 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Advancing to step 12:
If we divide 780 by 87, we get 8 and a remainder of 84.
Put 8 as the next digit of the answer. 
Result so far: 5174.862068
Subtract 696 from 780 to get 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

On to step 13:
When dividing 840 by 87, we get 9 with a remainder of 57.
Record the quotient 9 as the next digit in the result. 
Result so far: 5174.8620689
Deduct 783 from 840 and we're left with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Advancing to step 14:
The number 87 fits into 570 6 times, leaving a remainder of 48.
The number 6 becomes the next digit in our result. 
Result so far: 5174.86206896
Deduct 522 from 570 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

After the division, we end up with 5174.86206896 and a remainder of 4.8e-08.