We're dividing 451240 by 87 
We want to figure out the number of times 451240 can be divided by 87.

Step 1:
The number 87 fits into 4 0 times, leaving 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.
Include the next digit (5) from the dividend after 4, then repeat: 45 / 87

Step 2:
87 goes into 45 0 times with a remainder of 45.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 45, we end up with 45.
Take the next digit (1) from the dividend and append it to 45, then repeat: 451 / 87

Going ahead to step 3:
87 can be fit into 451 5 times, resulting in a remainder of 16.
Use 5 as the next digit of our solution. 
Result so far: 5.0
If we subtract 435 from 451, we get 16.
Fetch the next digit (2) from the dividend, attach it to 16 and continue: 162 / 87

Let's proceed to step 4:
When dividing 162 by 87, we get 1 with a remainder of 75.
Record the quotient 1 as the next digit in the result. 
Result so far: 51.0
If we take 87 away from 162, we end up with 75.
Take the next digit (4) from the dividend and append it to 75, then repeat: 754 / 87

Step 5:
87 can be fit into 754 8 times, resulting in a remainder of 58.
Write down 8 as next digit of the result. 
Result so far: 518.0
Subtract 696 from 754 to get 58.
Append the next digit (0) from the dividend to 58 and continue with: 580 / 87

Step 6:
When dividing 580 by 87, we get 6 with a remainder of 58.
Put 6 as the next digit of the answer. 
Result so far: 5186.0
If we subtract 522 from 580, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 7:
87 goes into 580 6 times with a remainder of 58.
Write down 6 as next digit of the result. 
Result so far: 5186.6
Deduct 522 from 580 and we're left with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Going ahead to step 8:
87 can be fit into 580 6 times, resulting in a remainder of 58.
The next digit of our result is 6. 
Result so far: 5186.66
The remainder is 58 after subtracting 522 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

In conclusion, the division gives 5186.66 with a balance of 0.058.