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Here is a simple example. $ \def\lfrac#1#2{{\large\frac{#1}{#2}}} $ $\color{green}{\Big( 99 · \big( 100·\sum_{k=0}^{10} (-\lfrac1{99})^k-99 \big)^\lfrac1{10} - 1 \Big)^\lfrac1{9} = 0}$. Windows Calc ( 99*( 100*(1-1/99+1/99y2-1/99y3+1/99y4-1/99y5+1/99y6-1/99y7+1/99y8-1/99y9+1/99y10)-99 )y(1/10) ...