3.46*13-13*6.54-12.5*1.09*0.8=?

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3.46*13-13*6.54-12.5*1.09*0.8=?
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3.46*13-13*6.54-12.5*1.09*0.8=?
3.46*13-13*6.54-12.5*1.09*0.8=?

3.46*13-13*6.54-12.5*1.09*0.8=?
3.46*13-13*6.54-12.5*1.09*0.8
=13*(3.46-6.54)-12.5*0.8*1.09
=13*(-3.08)-10*1.09
=-40.04-10.9
=-50.94