The answer is 1.425 .
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2
One and a half is twelve eights.plus five eights, is seventeen eights. That is two and one eighth in total, or 2.125 in decimal.
1 and 7 eighths
Five eights plus seven eights is twelve eights. 12/8 is 8/8 and 4/8 is 1 4/8 is 1 1/2 (one and a half)
Two fifths