Answer: 0.29 grams
Since one tablet contains 14.5mg of calcium, we can find how much calcium does a bottle of 20 tablets contains by multiplying the number of tablets by the amount of calcium.
Now, since we are asked to answer in grams, we will convert mg to g. To do this, we will divide the value by 1000
Therefore, a bottle of 20 tablets contains 0.29 grams