Ответ:
\(139\cdot2=278\); \(472\cdot2=944\); \(225\cdot4=900\); \(387\cdot2=774\); \(109\cdot3=327\); \(259\cdot2=518\); \(137\cdot4=548\); \(318\cdot4=1272\); \(328\cdot2=656\); \(198\cdot3=594\); \(209\cdot3=627\); \(298\cdot4=1192\).
\(139\cdot2=278\); \(472\cdot2=944\); \(225\cdot4=900\); \(387\cdot2=774\); \(109\cdot3=327\); \(259\cdot2=518\); \(137\cdot4=548\); \(318\cdot4=1272\); \(328\cdot2=656\); \(198\cdot3=594\); \(209\cdot3=627\); \(298\cdot4=1192\).