To convert grams to carats multiply 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 8.1 grams of ruby's but someone only wants to buy that in units of carats, to change the units multiply by 5. Now you have 40.50000 carats.

How many carats of diamonds are there in 2.8 grams? Just multiply by 5 to get the answer of 14 carats.

To convert 5.2 grams into carats multiply by 5 giving 26 carats.

You have 6.4 grams of platinum but you need to know how many carats that is. To get the answer multiply by 5 which gives you 32 carats.

In 2.8 grams of emeralds there are 14 carats, to achieve this take 2.8 and just multiply by 5.