d/dx[x^5] = 5x^5-1=5x^4
power rule
9 x 10^6
90,000
3 x 10 ^ 5
300,000
93 x 10^4
930,000
89 x 10 ^ 19
890000000000000000000
990010 x 10 ^ 12
990010000000000000
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