40584:89+35568:78=456+456=912
40584 : 89 + 35568 : 78 = 912
1) 40584 : 89 = 456
2) 35568 : 78 = 456
3) 456 + 456 = 912
40584:89+35568:78=456+456=912
40584 : 89 + 35568 : 78 = 912
1) 40584 : 89 = 456
2) 35568 : 78 = 456
3) 456 + 456 = 912