Toddler Yuan bought a batch of sugar and divided them into several portions. For example, if there are 4 pieces of 5 pieces for each portion, 3 pieces for each portion of 4 pieces, and 2 pieces for each portion of 3 pieces, what is the minimum number of pieces for a batch of sugar?
幼儿圆买来一批糖，把它们分成若干份．如每份5块余下4块；每份4块余下3块；每份3块余下2块，问一批糖至少有多少块？
<gadget id="calculator">5 * 4 * 3</gadget>
<output>60</output>

<gadget id="calculator">60 - 1</gadget>
<output>59</output>

<result>59</result>