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calculati:
1. 7+3×[23+5×(8+66:6)]=
2. [200-200:(75-25)]:4=
3. (2×3-5)²⁰¹⁶=
4. (5⁰+5¹+5²+5³+5⁴):(71:5+6×7×1)=
5. (2²×3²×5²):11+3²:7²-4²=
6. 4²+6³-844:7²+2⁴+8⁰=
7. 5³+5³:5²-10²​
repede, dau coroana