1021₃ = 1*3⁰ + 2*3¹ + 0*3² + 1*3³ = 34₁₀
11010101₂ = 1*2⁰ + 0*2¹ + 1*2² + 0*2³ + 1*2⁴ + 0*2⁵ + 1*2⁶ + 1*2⁷ = 213₁₀
123₁₀ = 1*2⁰ + 1*2¹ + 0*2² + 1*2³ + 1*2⁴ + 1*2⁵ + 1*2⁶ = 1111011₂
123₁₀ = 3*8⁰ + 7*8¹ + 1*8² = 173₈
4754₁₀ = 2*16⁰ + 9*16¹ + 2*16² + 1*16³ = 1292₁₆
