I really do need Audi R8 with loads of gas and some hot chicks. Who cares?
anyway
Step 1: grab your N70 in your hand
Step 2: move your body within the range of one meter from the fan, preferably facing the controls
Step 3: use your N70 as a stick and push the appropriate button on the fan with it (Be careful, this is the most tricky part! There is a huge possibility of pushing the wrong button, which might cause undesired operation, and possibly also cause the End of the World!)