I think it is kind of oviouse but ok...... 0 pounds because a grain of sult is so so light you can like hold as many as will stay on on your finger.
1000000000000000000
It means that something may not be completely true, and you should be careful as to not be taken in.
The expression "I took it with a grain of salt" meant "I didn't believe it".
no. sugar grains are smaller than salt grains