0.245*28+24.5*3+2.45*7.

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0.245*28+24.5*3+2.45*7.
0.245*28+24.5*3+2.45*7.

0.245*28+24.5*3+2.45*7.
0.245*28+24.5*3+2.45*7.2
=0.245*28+0.245*300+0.245*72
=0.245x(28+300+72)
=0.245x400
=98
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