Anonymous ID: eda50f Feb. 10, 2018, 2:53 a.m. No.325665 🗄️.is 🔗kun >>5784 >>325099 >>324485 math reverse polish notation https:// en.wikipedia.org/wiki/Reverse_Polish_notation hexadecimal digits, 0, 1, 2, … 9, a, b, … f Thus e 5 - = (14) - (5) = 9