Mr. Llesis had 50 kilograms of rice. He kept 7/10 of it in storage and gave the rest to Mr. Everest. How many kilograms of rice did Mr. Llesis keep than Mr. Everest?
Mr. Llesis kept 50 x 7/10 = 
<gadget id="calculator">50*7/10</gadget>
<output>35</output>
35 kilograms of rice.
So, he gave 50 - 35 = 
<gadget id="calculator">50-35</gadget>
<output>15</output>
15 kilograms of rice to Mr. Everest.
Therefore, Mr. Llesis kept 35 - 15 = 
<gadget id="calculator">35-15</gadget>
<output>20</output>
20 kilograms more than Mr. Everest.

<result>20</result>