4*14 = (10+4) * 4 = 10*4 + 4*4 = 40 + 16 = 56

930:3 = (900+30):3 = 900:3 + 30:3 = 300 + 10 = 310

300:20 = (200+100):20 = 200:20 + 100:20 = 10 + 5 = 15

600 : 5 = (500+100):5 = 500:5 + 100:5 = 100 + 20 = 120