<span>3,8*10+3,8*100+3,8*1000=4218</span>
<span><span>4,7:10+4,7:100-4,7:1000=<span>0,5123</span></span></span>
<span><span><span><span>25,22*10+186,354*100-16,7*10=18720,6</span></span></span></span>
<span><span><span><span><span> <span>79,504:10+0,2534*100-0,92038*10=</span>24,0866</span></span></span></span></span>