Question

Thank you for your help 2​

Answer 1

`\begin{array}{rllll} 3\cdot 10^3+4\cdot 10^2+5\cdot 10 + 7+8\cdot 10^(-1)+6\cdot 10^(-2) \\\\\\ 3\cdot 1000+4\cdot 100+5\cdot 10 + 7+8\cdot \cfrac{1}{10^1}+6\cdot \cfrac{1}{10^2} \\\\\\ 3000+400+50+7+8\cdot \cfrac{1}{10}+6\cdot \cfrac{1}{100} \\\\\\ 3000+400+50+7+\cfrac{8}{10}+\cfrac{6}{100} \\\\\\ 3000+400+50+7+0.8+0.06&\implies \text{\LARGE 3457.86} \end{array} \\\\[-0.35em] ~\dotfill`

`\begin{array}{rllll} 7\cdot 10^4+8\cdot 10^(-1)+3\cdot 10^(-2) \\\\\\ 7\cdot 10000+8\cdot \cfrac{1}{10^1}+3\cdot \cfrac{1}{10^2} \\\\\\ 70000+8\cdot \cfrac{1}{10}+3\cdot \cfrac{1}{100} \\\\\\ 70000+\cfrac{8}{10}+3\cfrac{1}{100} \\\\\\ 70000+0.8+0.01&\implies \text{\LARGE 70000.81} \end{array}`