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How did he get from 3^-16/3/3^-8/3 to 0.00285333857/0.00285333857??? (The circled part) Because when I put it in the calculator I don’t get the decimal I was suppose to get.

How did he get from 3163383 to 000285333857000285333857 The circled part Because when I put it in the calculator I dont get the decimal I was suppose to get class=