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(55*4.5-45*0.3)*44.

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(55*4.5-45*0.3)*44.
(55*4.5-45*0.3)*44.
(55*4.5-45*0.3)*44.4
=52*4.5*4*11.1
=52*18*11.1
=26*36*11.1
=(31^2-25)*11.1
=(961-25)*11.1
=936*11.1
=9360+936+93.6
=10389.6