Why am I getting 27 instead of 343 in macro substitution program

Question

https://code.sololearn.com/cAQeR5sQKVdj/?ref=app

Answer 1

Sreenesh

5 + 2 * 5 + 2 * 5 + 2
= 5 + 10 + 10 + 2
= 27

Answer 2

Sreenesh

x = (5 + 2)

(5 + 2) * (5 + 2) * (5 + 2)
= 343

Answer 3

#define x 5+2
i = x*x*x;
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i = 5+2*5+2*5+2;
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