The result of your conversion between Iron and grain/quart [UK] appears here
To convert between Iron and Grain/quart [UK] you have to do the following:
First divide 7658 / ((0.45359237/16)*(192/175)/480)/(0.00454609/4) = 134315.36587575
Then multiply the amount of Iron you want to convert to Grain/quart [UK], use the chart below to guide you.
Symbol: iron
No description
Symbol: gr/qt
No description