Yesterday a mysterious man came to my house. I didn't open the door, because I didn't know him.
Later I found a message under the door as show below:
1+1-1·0*1 n 1*9/9 y·w 2^2 n sqrt(49) sqrt(9) d·140/2·126/2·y 0*0 ur·fr 26/2 nd!
What does the message say?