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ÐPŠO;sO¹·-P8*¹/P Explanation
O # implicitsum input [a,b,c] Ð ¹ # triplicatepush input P # product of one copy Š # move to bottom of stack O # sum the second copyagain ; · # halvemultiply theby sum2 s- # subtract the third copy from this P # productsum ¹/ 8* # multiplydivide by 8input P / # divide the product by this ÐPŠO;s-P8*/ Explanation
# implicit input [a,b,c] Ð # triplicate input P # product of one copy Š # move to bottom of stack O # sum the second copy ; # halve the sum s- # subtract the third copy from this P # product 8* # multiply by 8 / # divide the product by this ÐPŠO;s-P8*/ Explanation
# implicit input [a,b,c] Ð # triplicate input P # product of one copy Š # move to bottom of stack O # sum the second copy ; # halve the sum s- # subtract the third copy from this P # product 8* # multiply by 8 / # divide the product by this