Doing a very specific equation with calc in less -

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i need specific equation using calc in less.

namely this

padding: 0 calc((100% - 1280px)/2 + 30px);

it works when try in editor in chrome i'm not sure parts of equation need encapsulated in ~"".

currently i'm doing below doesn't yield correct sum 

padding: 0px ~"calc((100% - 1280px)/2 + 30px)";

less , calc

try:

padding: 0px calc(~"100% - 1280px)/2 + 30px");

its known issue :
less aggressive compilation css3 calc


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