Hi ABS66,
From what I've gathered, you can't just multiply the unit cost by the freight cost in one go. You need to either manually allocate the freight cost to your inventory item or recalculate the cost to include both the unit and freight costs. And about your query on multiplying the line item to 4 decimal places, you can adjust the item price selling details to the exact amount and make sure to check the option for prices being tax-inclusive.
However, if I'm missing the mark, hopefully, one of our members here can chime in with some advice for your specific issue.
Cheers,
Princess
