Evaluate
387420489\left(x+1\right)^{18}
Expand
387420489x^{18}+6973568802x^{17}+59275334817x^{16}+316135119024x^{15}+1185506696340x^{14}+3319418749752x^{13}+7192073957796x^{12}+12329269641936x^{11}+16952745757662x^{10}+18836384175180x^{9}+16952745757662x^{8}+12329269641936x^{7}+7192073957796x^{6}+3319418749752x^{5}+1185506696340x^{4}+316135119024x^{3}+59275334817x^{2}+6973568802x+387420489
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