17 * 0.67= 11.39
Basically you just write it as if you were solving a normal multiplication problem and forget about the zero and the decimal until the end. When you have done all the multiplication you look a how many decimal places there were in the original problem (2) and put it that many decimal places over. Meaning it goes in between the 1 and the 3 in the number 1139, making it 11.39. I hope this helped.