19/12+7/3÷7/4×19/12×1×3×65/42+221/90÷11×7+23
=19/12+7/3x4/7x19/12x3x65/45+221/90x1/11x7x23
=19/12+[tex] \frac{19}{12} + \frac{7*4*19*3*65}{3*7*12*45} + \frac{221*7*23}{90*11} [/tex]
[tex]= \frac{19}{12} + \frac{19*65}{3*45} + \frac{35581}{990} [/tex]
[tex]= \frac{19}{12} + \frac{1235}{135} + \frac{35581}{990}[/tex]
[tex]= \frac{2539350+14671800+57641220}{1603800} [/tex]
=[tex] \frac{74852370}{1603800} [/tex]
=environ 46.671
