I am not very mathematical at all, I think the highest I went was like Algebra 1/2 or whatever in Highschool. But my question is what kind of math equation would I do If I was buying Bitcoin from LocalBitcoins and say I needed $160 for a sheet of acid. How do I figure out with the sellers markup and all that how much cash I would need to put down to buy the right amount of coin to get to where I was pretty close, at least within like 5 bucks? I hope Im explaining this right, but I have been trying to figure this out for awhile now.
You type "165" into the "$" box, press the tab key on your keyboard and the bitcoin box autofills.
Check HOW MANY BITCOIN the item you want to buy costs, then buy a little bit more bitcoin than that. Check the cost by typing that amount of btc into the "btc" box of a trader. The $ box will tell you how much you would need to pay him.