\(25,75\times6,8+51,5\times1,6\\ =25,75\times6,8+25,75\times2\times1,6\\ =25,78\times6,8+25,75\times3,2\\ =25,75\times\left(6,8+3,2\right)\\ =25,75\times10\\ =257,5\)
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