Yes, it takes a "micro sd card". To insert it, just take off the back and put it in the green space next to your sim card.
There are many phones that are better than the Vodafone 543. Get yourself an iphone or an android
No
9076212
no
There are 5 hundreds in 543. This is determined by dividing 543 by 100, which gives 5.43. Since we are only interested in whole hundreds, we take the integer part, which is 5.
543
543 is not prime. 543 = 3 * 181
543
543
90.5
543 + 78900000 = 78900543
87646555555555555553248777775813 + 543 = 87646555555555555553248777776356