Question

2+10x{2+10x[2+10x(2+10)]}

Answer 1

$2 + 10 * \{ 2 + 10 * [2 + 10 * (2 + 10)]\} \\ \\ 2 + 10 * \{2 + 10 * [2 + 10 * 12]\} \\ \\ 2 + 10 * \{2 + 10 * [2 + 120]\} \\ \\ 2 + 10 * \{2 + 10 * 122\} \\ \\ 2 + 10 * \{2 + 1.220\} \\ \\ 2 + 10 * 1.222 \\ \\ 2 + 12.220 \\ \\ => 12.222$