Răspuns:
[5¹⁰×5⁹⁰+7²⁰:49+1²⁰²⁰]:[25⁵⁰+7¹⁰⁰:7⁸²+2020⁰]=
[5¹⁰⁺⁹⁰+7²⁰:7²+1²⁰²⁰]:[(5²)⁵⁰)+7¹⁰⁰⁻⁸²+1]=
(5¹⁰⁰+7¹⁸+1):(5¹⁰⁰+7¹⁸+1)=1
