Xiao Ming has a bag of sugar. If you count 4 grains, there are 3 grains less, and if you count 5 grains, there are 2 grains more. If you count 3 grains, it is just right. How many grains of sugar are there at least in this pack?
小明有一包糖，4粒一数少3粒，5粒一数多2粒，3粒一数正好，这包糖至少有多少粒？
<gadget id="calculator">3 * 4 * 5</gadget>
<output>60</output>

<gadget id="calculator">60 - 3</gadget>
<output>57</output>

<result>57</result>