40divide a a divide 3600⇒ 40 div 3600
40 divide b b divide 3600⇒ 40 div 3600
200= 2³·5² 200= 2³·5²
360= 2³·3²·5 360 =2³·3²·5
80=2⁴·5 80=2⁴·5
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(200;360;80) =2³·5 =40 [200;360;80] =2⁴·5²··3² = 3600