7 x 78 = 546
Not by a whole number, but 7 * (78/7) will give you 78 since the 7's will cancel out.
77 + 7/7 = 78
Exactly 78 times
11.1429
11.1429
The product of 78 and 7 is 546
The answer is 546/78 = 7. Simple, really!
4+78=82-7=75
-78 x -5/7 = 55 and 5/7
15
78/1