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Simplify and calculate a value of expressions: (2x+y)(3y-5x) - 4x(x-y) for x = 1, y = -2; a(a-3b) + 2ab - b^2(2-b) for a = 2, b = -3; (2p-3k)(k-4p) - 2k^2 / 3p(4-k) - 5k(p+3) for p = -2, k = -4; (a+1)(b+2) + (b+3)(c+4) + (a+5)(c+6) for a=1, b=2, c=3.