Formula
CommonFun.calcBuff_6501
function CommonFun.calcBuff_6501(srcUser, targetUser, a, b, c, d, lv)
if srcUser == nil or targetUser == nil then
return 0
end
local A = 0
local Gem = srcUser:GetGemValue(c)
if srcUser:HasBuffID(b) then
A = Gem / a + d
end
return A
end