Simple calculation: 145*(929292/292929)-460*(458/459).
简算：145*(929292/292929)-460*(458/459)．
<gadget id="calculator">929_292 / 292_929</gadget>
<output>92/29 = around 3.172414</output>

<gadget id="calculator">145 * (92/29)</gadget>
<output>460</output>

<gadget id="calculator">458 / 459</gadget>
<output>458/459 = around 0.997821</output>

<gadget id="calculator">460 * (458/459)</gadget>
<output>210_680/459 = around 458.997821</output>

<gadget id="calculator">460 - (210_680/459)</gadget>
<output>460/459 = around 1.002179</output>

<result>460/459 = around 1.002179</result>