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Reiny 9+8÷9 (9×100)×100÷4×5
= 9+8/9(900)×100÷4×5
= 9+800×100÷4×5
= 9+80000/4×5
= 9+20000×5
= 9 + 100000
= 100009
check
https://www.wolframalpha.com/input/?i=9%2B8%C3%B79+%289%C3%97100%29%C3%97100%C3%B74%C3%975