1+(1/2+1/3+1/4)×(1/2+1/3+1/4+1/5)-(1/2+1/3+1/4+1/5)×(1/2+1/3+1/4)=6L0J)U7N*J6n8P+c,]/A*L1K0H9t(q
算式:提示+[4Y:A4o0_:A5l,S(K,]/A*L1K0H9t(q