Simple operation of 3.2 times 9.4 plus 68 times 0.06 All brothers and sisters, please, class will begin tomorrow!

I don't know if it's simple:
Original formula = 3.2 * 9.4 + 6.8 * 0.6
=3.2*（10-0.6）+（10-3.2）*0.6
=32-3.2*0.6+10*0.6-3.2*0.6
=32+（10-3.2*2）*0.6
=32+3.6*0.6
=32+1.96
=33.96

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