69*(198/199)+198*(81/199)+98*(99/199).
69*(198/199)+198*(81/199)+98*(99/199)．
<gadget id="calculator">198 / 199</gadget>
<output>198/199 = around 0.994975</output>

<gadget id="calculator">69 * (198/199)</gadget>
<output>13_662/199 = around 68.653266</output>

<gadget id="calculator">81 / 199</gadget>
<output>81/199 = around 0.407035</output>

<gadget id="calculator">198 * (81/199)</gadget>
<output>16_038/199 = around 80.592965</output>

<gadget id="calculator">99 / 199</gadget>
<output>99/199 = around 0.497487</output>

<gadget id="calculator">98 * (99/199)</gadget>
<output>9_702/199 = around 48.753769</output>

<gadget id="calculator">(13_662/199) + (16_038/199) + (9_702/199)</gadget>
<output>198</output>

<result>198</result>