ok...if i have 30 pounds of weed and i give 2.5 to my firend, and 23 grams mold, and then i buy 3 more ounces, i smoke an eigth and smoke up my friend with another 1/8 and then i find a bag of weed with 2 oz in it and i sell 13 pounds and i lose 3 more pounds....how many grams of weed do i have left? lol have fun on the conversions