8888×6668+4444×6664
=8888×6668+4444×(2×3332)
=8888×6668+(4444×2)×3332
=8888×6668+8888×3332
=8888×(6668+3332)
=8888×10000
=88880000
8888×6668+4444×6664
=8888×6668+4444×(2×3332)
=8888×6668+(4444×2)×3332
=8888×6668+8888×3332
=8888×(6668+3332)
=8888×10000
=88880000