There are a total of 300 black and white chess pieces, and the black crow divides the black and white chess pieces into 100 piles with 3 pieces in each pile. Among them, there are 27 piles with only 1 white piece, 42 piles with 2 or 3 black pieces, and the same number of piles with 3 white pieces and 3 black pieces. Then, how many white pieces are there in these chess pieces.
有黑白两种棋子共300枚，黑乌鸦将黑白两种棋子按每堆3枚分成100堆．其中只有l枚白子的共有27堆，有2枚或3枚黑子的共有42堆，有3枚白子的与3枚黑子的堆数相等．那么，在这些棋子中白子共有多少枚．
<gadget id="calculator">27 * 1</gadget>
<output>27</output>

<gadget id="calculator">42 - 27</gadget>
<output>15</output>

<gadget id="calculator">15 * 0</gadget>
<output>0</output>

<gadget id="calculator">15 * 3</gadget>
<output>45</output>

<gadget id="calculator">100 - 27 - 15 - 15</gadget>
<output>43</output>

<gadget id="calculator">43 * 2</gadget>
<output>86</output>

<gadget id="calculator">27 + 0 + 45 + 86</gadget>
<output>158</output>

<result>158</result>