A basket of shrimp weighs 13 kilograms, and a basket of fish weighs 3 kilograms four times that of a basket of shrimp. How many kilograms does a basket of fish weigh?
一筐虾重13千克，一筐鱼比一筐虾的4倍轻3千克，一筐鱼重多少千克？
<gadget id="calculator">13 * 4</gadget>
<output>52</output>

<gadget id="calculator">52 - 3</gadget>
<output>49</output>

<result>49</result>