I would like to find all the expressions that can be created using nothing but arithmetic operators, exactly eight $8$'s, and parentheses. Here are the seven solutions i've found (on the internet) Can anyone explain why 1 m3 1 m 3 is 1000 1000 liters?

1 cubic meter is 1 Γ— 1 Γ— 1 1 Γ— 1 Γ— 1 meter. It has units m3 m 3. A liter is liquid amount measurement. 1 liter of milk, 1 liter of Ò€¦