To convert cubic millimeters (mm³) to cubic meters (m³), you need to understand the relationship between millimeters and meters. One meter (m) equals 1,000 millimeters (mm). Since we are dealing with cubic units, we must cube this conversion factor. That means \(1~m^3 = (1,000~mm)^3 = 1,000,000,000~mm^3\) (one billion cubic millimeters). Therefore, to convert from mm³ to m³, you divide the number of cubic millimeters by one billion (\(10^9\)). For example, if you have 5,000,000 mm³, the conversion would be \(5,000,000~mm^3 \div 1,000,000,000 = 0.005~m^3\). Thus, the general formula is: \( \text{Value in m}^3 = \text{Value in mm}^3 \div 1,000,000,000 \) or \( \text{Value in mm}^3 \times 10^{-9} \).