Countries where pounds and ounces are commonly used:
United States of America (USA) , South Africa, United Kingdom (UK), Eire (ROI), India, Canada, Australia and the Commonwealth of Nations.
The Japanese 1 yen coin has a mass of one gram. (lighter than the British penny (3.56 g), the United States cent (2.5 g) or the "Euro-cent" (2.30 g)).
Converting grams into ounces, the maths
Times grams by 0.0353 to convert grams into ounces
794 g = 28.0282 oz
Answer = int(794 * .0353) [28 oz]
Here are the calculations used to convert ounces to pounds and ounces
oz_start = 28
lb_calc = int(oz_start/16) [therefore lb_calc == 1 lb]
oz_calc = 28 - (lb_calc * 16) [therefore oz_calc = 12 oz]
Answer = lb_calc, oz_calc [1 lb, 12 oz]
Wikipedia links covering units of mass show/hide