The following utility will enable you to convert mass/weight expressed in ounces to grammes
To convert ounces to grammes multiply by 28.34952
How many grammes of salt are there in 440 ounces? Just multiply by 28.34952 to get the answer of 12473.79 grammes.
You've got 530 ounces of sugar but someone only wants to buy that in units of grammes, to change the units multiply by 28.34952. Now you have 15025.25 grammes.
In 460 ounces of pasta there are 13040.78 grammes, to achieve this take 460 and just multiply by 28.34952.