Xiao Ming usually walks to school. One day he wants to exercise. He runs fast for the first (1/3) distance at 4 times his walking speed, and jogs for the latter distance at 2 times his walking speed. In this way, Xiao Ming arrives at school 35 minutes earlier than usual, how many minutes does it take for Xiao Ming to walk to school?
小明通常总是步行上学，有一天他想锻炼身体，前(1/3)路程快跑，速度是步行速度的4倍，后一段的路程慢跑，速度是步行速度的2倍．这样小明比平时早35分到校，小明步行上学需要多少分钟？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">(2/3) / 2</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/3) / 4</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">1 - (1/3) - (1/12)</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">35 / (7/12)</gadget>
<output>60</output>

<result>60</result>