Answer:
steps below
Explanation:
if your problem is s²ⁿ = s²*²⁰ = s⁴⁰ (n replace your t)
s²ⁿ = 7⁴⁰ = 6366805760909027985741435139224001
if the problem is s² x 20 = 7² x 20 = 980
7^40 is umm I don't know sorry
But hopefully it's helpful.
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