Hey guys i cant seem to understand much word problems.. for example

"The sum of a number and six, multiplied by two results in twenty-two"

I need a math expression out of that.

If you have time can you please give me some hints on how to solve word problems. May you also tell me some words that i need to know to solve words problems for Example "of" Means multiply. If you know more please list them that would be very helpful.