Figure out a very easy way to convert decimal odds to american odds
this is only useful when you head down to HKJC betting shops and you only have your shitty cellphone calculator.
any odds above 2 are pretty easy...just subtract 1 times 100 and add a plus sign to the front.
for any odds from 1 to 2, all you have to do is to calc 100/decimal part and then times a 100 and add a minus sign to the front.
for example 1.62 -> 100/62 = 1.61, so it is -161. this is easy because all you have to type into your cellphone calculator is 100/61...or 1/61...that is only about 4-6 key strokes.