Just use XXXV? No need to do 5 * 7

it parses the V in XXXV as an element group

But that's not a problem because that leaves you with only V and R which add to 98, so you only need to add some others to get it up to 200.

I have a similar problem -- the Google Maps country I got is China, and the C is already 100 -- how do multiply it "down" to 35? Can I do parenthetical math similar to what a sibling comment suggested?

Update: I found the answer in another comment -- I can make the c lowercase! Thank you HN!

Same boat. I tried doing some parenthetical math (X-III)(III+II) but it doesn't work.

Well I is for Iodine,which has 53 as its atomic number, so this definitely wouldn't work anyways. XXXV is the way around this.