(1776+824)*60= 2600*60=1560000
1776*60+824*60 = 106560 + 494640=1560000
(3504-1224)/4=3504/4-1224/4=876-306=570
(3504-1124)/4=2280/4=570
(1776+824)*60= 2600*60=1560000
1776*60+824*60 = 106560 + 494640=1560000
(3504-1224)/4=3504/4-1224/4=876-306=570
(3504-1124)/4=2280/4=570
2) 2280:4=570
3) 3504-306=3298
4) 1776+49440=51216