In order to support the epidemic area to fight against "SARS", a certain school launched a scare donation activity. Grades 1 to 3 donated 1,800 yuan, and grades 6 donated more than grades 1 to 3 (1/6). How much is the donation for grades 6?
为支援疫区抗击"非典"，某校开展了献受惊捐款活动，1至3年级捐款1800元，六年级捐款比1至3年级多(1/6)，六年级捐款多少元？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 + (1/6)</gadget>
<output>7/6 = around 1.166667</output>

<gadget id="calculator">1_800 * (7/6)</gadget>
<output>2_100</output>

<result>2_100</result>