Lily had $55 in her account. She spent $7 on a shirt. She then went to another shop and spent thrice as much as she spent on a shirt. How much money is left in Lily's account?
After spending money on a shirt, Lily had $55 - $7 = $
<gadget id="calculator">55-7</gadget>
<output>48</output>
48 left.
She spent $7 x 3 = $
<gadget id="calculator">7*3</gadget>
<output>21</output>
21 on another store.
Therefore, she only has $48 - $21 = $
<gadget id="calculator">48-21</gadget>
<output>27</output>
27 left on her account.

<result>27</result>