I'm not sure why it's possible to change the division sign, but using a colon (":") to indicate a fraction is confusing given that it's generally used for odds.

I'm not sure why it's possible to change the division sign, but using a colon (":") to indicate a fraction is confusing given that it's generally used for odds. ( 0.1 + 0.2 )/( 1/3 * 12 ) = 3/40 3:40 = "three to forty odds" = 3/43