153+54+71×46+82×46
=153+54+(71+82)*46
=153*1+153*46+54
=153*47+54
=(100+53)*(100-53)+54
=100²-53²+54
=10000-(53²-3²)+45
=10000-56*50+45
=7245
7245
1234567898²-1234567897×1234567899
=1234567898² -(1234567898-1)*(1234567898+1)
=1234567898²-(1234567898²-1²)
=1
（12345678+23456781+34567812+……81234567）÷6
这条按位来计算
= [(1+2+3+……8)千万+(2+3+4……+1)百万+……(8+1+2+……7)个 ] /6
= (36千万+36百万+36十万+……+36个)/6
= 66666666
9999×1111+3333×6667
=9999×1111 + 3333*6666+3333
=1111*1111*9+1111*1111*3*6+1111*3
=1111*1111*(9+18)+1111*3
=1111*3*1111*9+1111*3
=1111*3*(1111*9+1)
=1111*3*10000
=33330000