<span> 2 3 1 4 </span>
<span>(3593+5016-12*203)/211≈29,2.........</span>
<span>1)<span>12*203=2436</span></span>
<span><span>2)3593+5016=8609</span></span>
<span><span>3)8609-2436=6173</span></span>
<span><span>4)6173/211≈29,2.....</span></span>
1)
4001+2421=6422
4011+2421=6432
4111+2421=6532
2)
2004-234=1770
2014-234=1780
2114-234=1880