1double arithmetic
210.500000 + 1.250000 = 11.750000
310.500000 - 1.250000 = 9.250000
410.500000 * 1.250000 = 13.125000
510.500000 / 1.250000 = 8.400000
6float arithmetic
710.500000 + 1.250000 = 11.750000
810.500000 - 1.250000 = 9.250000
910.500000 * 1.250000 = 13.125000
1010.500000 / 1.250000 = 8.400000
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