If you correctly recall the elementary trick for order of operations, solving this problem should be a breeze.
New studies of the “platypus of materials” help explain how their atoms arrange themselves into orderly, but nonrepeating, ...
Abstract: This work was supported in part by the National Key R&D Program of China under Grant 2017YFB1002505, in part by the National Natural Science Foundation of China under Grant 61603142 and ...