18×36+82×36
=36×(18+82)
=36×100
=3600
(4+40)×25
=4×25+40×25
=100+1000
=1100
24×59+24
=24×(59+1)
=24×60
=1440
56×101-56
=56×(101-1)
=56×100
=5600