<span>(860+40)-(560-60 ):100 = 4</span>
<span>1) 860+40 = 900</span>
<span>2) 560-60 = 500</span>
<span>3) 500:100 = 5</span>
<span>4) 900-5 = 895</span>
<span>(920-50)+(480+24):6 = 954</span>
<span>1) 920-50 = 870</span>
<span>2) 480+24 = 504</span>
<span>3) 504:6 = 84</span>
<span>4) 870+84 = 954</span>
<span>2400-(270+30)* (400-396) = 1200</span>
<span>1) 270+30 = 300</span>
<span>2) 400-396 = 4</span>
<span>3) 300*4 = 1200</span>
<span>4) 2400-1200 = 1200</span>
<span>510*6 = 3060</span>
<span>(78-20)+(230+470) = 758</span>
1) 78-20 = 58
2) 230+470 = 700
3) 700+58 = 758