To get the Greatest Common Factor (GCF) of 1760 and 1400 we need to factor each value first and then we choose all the copies of factors and multiply them:
1760: 2 2 2 2 2 5 11
1400: 2 2 2 5 5 7
GCF: 2 2 2 5
The Greatest Common Factor (GCF) is: 2 x 2 x 2 x 5 = 40
