345₈ = 11100101₂
642₈ = 110100010₂
4521₈ = 100101010001₂
101010₂ = 52₈
11110₂ = 36₈
1011001₂ = 131₈
2371₈ = 1273₁₀
651₈ = 425₁₀
2313₈ = 1227₁₀
115₁₀ = 163₈
152₁₀ = 230₈
83₁₀ = 123₈
4323₈+245₈=4568₈
4210₈-103₈=4105₈
6532₈-723₈=5607₈
345₈*14₈=5274₈
153₈*23₈=3761₈