Xiao Pang and Xiao Ding Ding set off from City B at the same time in a passenger car and a small car respectively, and went opposite to each other. The car travels 44 kilometers per hour, and the bus travels 35 kilometers per hour. After 20 hours, how many kilometers are there between Xiao Pang and Xiao Ding Ding?
小胖和小丁丁分别乘客车与小车同时从B城出发，相背而行．小车每小时行44千米，客车每小时行35千米，经过20小时后，小胖和小丁丁相距多少千米？
<gadget id="calculator">44 * 20</gadget>
<output>880</output>

<gadget id="calculator">35 * 20</gadget>
<output>700</output>

<gadget id="calculator">880 - 700</gadget>
<output>180</output>

<result>180</result>