472x(2.5+25)
=118x(4x2.5+25x4)
=118x10 +118x100
=1180+11800
=12980
=(4x118)x(2.5x11)
=4x118x2.5x11
=(4x2.5)x118x11
=10x118x11
=1180x11
=1180x(10+1)
=11800+1180
=12980
472x(2.5+25)=472x(10/4+100/4)=472x(10+100)x(1/4)
=118x10+118x100
=1180+11800
=12980