John has 10 members of his family on his father's side.  His mother's side is 30% larger.  How many people are there in total?
His mother's side is 10*.3=
<gadget id="calculator">10*.3</gadget>
<output>3</output>
3 people larger than his father's side.
So his mother's side has 10+3=
<gadget id="calculator">10+3</gadget>
<output>13</output>
13 people.
So the total number of people is 13+10=
<gadget id="calculator">13+10</gadget>
<output>23</output>
23.

<result>23</result>