Confused about my ticker

Not my heart, the chickens at the bottom of my messages. I put in my starting weight of 14st10lb and the weight achieved as 13st13lb. My (admittedly unreliable) maths makes that 11lb lost. The ticker says I've lost 13lbs though (see below). eh?
 
OK, just done the math so:
Start weight: 14.10 x 14 = 197.4 (round down to 197)
Existing weight: 13.13 x 14 = 183.82 (round up to 184)
197-184 DOES make 13 pounds (chickens are right)
But 14st10 - 13st13 only makes 11 pounds.

Can anyone explain?
 
OK, just done the math so:
Start weight: 14.10 x 14 = 197.4 (round down to 197)
Existing weight: 13.13 x 14 = 183.82 (round up to 184)
197-184 DOES make 13 pounds (chickens are right)
But 14st10 - 13st13 only makes 11 pounds.

Can anyone explain?

You can't multiply as above because one stone is split into forteenths not tenths!
You need to multiply the amount of stones by 14 and then add the remaining pounds!
 
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Yes Fiona is correct, it should be:

14 x 14 = 196 + 10 = 206 lbs start
13 x 14 = 182 + 13 = 195 lbs now
 
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