1680
1680040% of 4200 = 1680= 40% * 4200= 40%/100% * 4200= 4 * 420= 1680
560 (1680 divided by 3)
1680 divided by 4 is equivalent to 420.
16800
4200*0.40=1680 4200-1680=2520
0.0036
0.0042
15/560 - 100/84 = (15*3 -100*20)/1680 = (45-2000)/1680 = -1955/1680 = -391/336 or -1.164
840
1680 can be divided by all three.
3360