There are 150 fewer black rabbits than white rabbits, and 20% more white rabbits than black rabbits. How many black rabbits are there? What is the correct column
黑兔比白兔少150只，白兔比黑兔多20%，黑兔有多少只？正确列式是多少
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">150 / (1/5)</gadget>
<output>750</output>

<result>750</result>