To convert carats to grams divide by 5. I've generated some hopefully helpful examples randomly below, as with most random sentences please excuse the repetitive and occasionally comic outcomes.

You've got 6.3 carats of platinum but someone only wants to buy that in units of grams, to change the units divide by 5. Now you have 1.26 grams.

In 6.6 carats of gold there are 1.32 grams, to achieve this take 6.6 and just divide by 5.

How many grams of ruby's are there in 8.8 carats? Just divide by 5 to get the answer of 1.76 grams.

You have 6.7 carats of emeralds but you need to know how many grams that is. To get the answer divide by 5 which gives you 1.34 grams.

To convert 8.9 carats into grams divide by 5 giving 1.78 grams.