Question

2+10x{2+10x[2+10x(2+110)]}

Answer 1

2 + 10 * {2 + 10 * [2 + 10 * (2 + 110)]}
2 + 10 * {2 + 10 * [2 + 10 * 112]}
2 + 10 * {2 + 10 * [2 + 1120]}
2 + 10 * {2 + 10 * 1122}
2 + 10 * {2 + 11220}
2 + 10 * 11222
2 + 112220
112222

Espero ter ajudado. Valeu!