A rich man has an inheritance of 3.5 million yuan. He wrote such a will to his pregnant wife: if a boy is born, he will give (2/3) of the inheritance to the son and (1/3) to the mother; If it is a girl, give (1/3) of the inheritance to the daughter and (2/3) to the mother. As a result, his wife gave birth to twins, a boy and a girl. According to the requirements of the will, how much will his mother get?
一位富豪有350万元遗产，他对怀孕的妻子写下了这样的遗嘱：如生下来是男孩，就把遗产的(2/3)给儿子，(1/3)给母亲；如生下来是女孩，就把遗产的(1/3)给女儿，(2/3)给母亲．结果他妻子生下一男一女的双胞胎，按遗嘱要求，他母亲可以得多少万元？
<gadget id="calculator">4 + 2 + 1</gadget>
<output>7</output>

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">350 * (2/7)</gadget>
<output>100</output>

<result>100</result>