[tex]1520000 \: {mm}^{3} + 238000 \: {cm}^{3} = 0.00152 \: {m}^{3} + 0.238 \: {m}^{3} = 0.23952 \: {m}^{3} [/tex]
[tex]5000 \: {cm}^{3} + 2.5 \: {dm}^{3} = 0.005 \: {m}^{3} + 0.0025 \: {m}^{3} = 0.0075 \: {m}^{3} [/tex]
[tex]15 \: {dam}^{3} + 29675 \: {mm}^{3} = 15000 \: {m}^{3} + 0.000029675 \: {m}^{3} = 15000.000029675 \: {m}^{3} [/tex]