First, you would want to get the numbers to the same format (in this case decimal would be best). And to do that you would do 100/4=25 which means 3/4=75/100 then 75/100. Now that they are the same you will multiply the two which equals 247.5 so 330/ 3/4 simplified is 330/247.5 or 3/4 of 330 is 247.5