见解析
(1)3200÷(1880-72×25),
=3200÷(1880-1800),
=3200÷80,
=40;
(2)71×25+71×76,
=71×(25+76),
=71×101,
=71×(100+1),
=71×100+71×1,
=7100+71,
=7171;
(3)125×32×25,
=(125×8)×(4×25),
=1000×100,
=100000;
(4)2043+7084÷7×13,
=2043+1012×13,
=2043+13156,
=15199;
(5)398+167+102+333,
=(398+102)+(167+333),
=500+500,
=1000;
(6)14-3.86-6.17,
=14-(3.86+6.17),
=14-10.03,
=3.97.