Solution

Each emoji represents one digit from 0 to 9. Given the format of most of the lines, you can assume that the numbers will represent coordinates. Since all coordinates starts by the same digits, you can try to fill in the coordinates around elmia. This gives you five of the numbers. 😉=5, 🤢=7, 💢=1, 🌪=4, 🪫=2. Using the three equations, you can deduce what the rest of the numbers are. 57.790461,14.232865 - 1 57.788121,14.230275 57.788399,14.232976 57.788321,14.229593 57.788581,14.232832 57.789943,14.234086 / 5 57.791085,14.229270 * 2 + 2 Now that you have the coordinates, you can go to the seven positions and find various things that all have a height somewhere between 1 and 20 meters. Trees, poles, etc. Taking all the heights, and in some cases subtracting, multiplying, and dividing gives you a set of numbers. Those can be converted into letters, that spell out the word placebo.