The 10 grams of protein that most of us get from cereal and milk at breakfast, he added, is not enough to get the bodyâs muscle-building machinery working at full throttle. For that, we would need to eat about 25 to 30 grams of protein, the amount in a three-egg cheese omelet.
For example, the prefix kilo means times a thousand or one thousand of the units in question. So  kilometre means one thousand metres and kilogrammeans one thousand grams.
K stands for thousands in money and numbers etc. 250k is $250,000.00, and is also known as 250 grand, a quarter of a million dollars and 250 big ones and finally, 250large. (lowercase) it the abbreviation for kilo. kilo is a prefix used to represent 1000. 250k means 250 thousand. There are others I am sure you have seen some of.