计算：（1）2011−2.6×2.6+75×1.4（2）37×2.96÷2111÷(157×1.48)×4211（3）223×(178−56)−(78+156)÷314（4）[124+314×2+(1712−0.625)]×0.7．

Question

计算：
（1）2011−2.6×2.6+(7)/(5)×1.4
（2）(3)/(7)×2.96÷2(1)/(11)÷(1(5)/(7)×1.48)×4(2)/(11)

（3）2(2)/(3)×(1(7)/(8)−(5)/(6))−((7)/(8)+1(5)/(6))÷3(1)/(4)
（4）[(1)/(24)+(3)/(14)×2+(1(7)/(12)−0.625)]×0.7．

Answer 1

（1）2011−2.6×2.6+(7)/(5)×1.4
=2011-6.76+3.36，
=2004.24+3.36，
=2007.6；

（2）(3)/(7)×2.96÷2(1)/(11)÷(1(5)/(7)×1.48)×4(2)/(11)
=(3)/(7)×(74)/(25)×(11)/(23)÷（(12)/(7)×(49)/(25)）×(46)/(11)，
=(3)/(7)×(74)/(25)×(11)/(23)×(25)/(84)×(46)/(11)，
=(37)/(49)；

（3）2(2)/(3)×(1(7)/(8)−(5)/(6))−((7)/(8)+1(5)/(6))÷3(1)/(4)
=(8)/(3)×(25)/(24)-(65)/(24)×(4)/(13)，
=(25)/(9)-(5)/(6)，
=(5)/(3)；

（4）[(1)/(24)+(3)/(14)×2+(1(7)/(12)−0.625)]×0.7
=[(1)/(24)+