5x100+7x10+5x1+2 x 1/10+ 4 x 1/100+ 8 x 1/1000
To calculate this expression, let's simplify it step by step:
First, we'll multiply each whole number by the corresponding place value:
5 x 100 = 500
7 x 10 = 70
5 x 1 = 5
Next, we'll calculate the decimal part:
2 x 1/10 = 2/10 = 0.2
4 x 1/100 = 4/100 = 0.04
8 x 1/1000 = 8/1000 = 0.008
Now, we'll add up all the results:
500 + 70 + 5 + 0.2 + 0.04 + 0.008 = 575.248