155
Let me know if this helps. Do you have a calculator?
961
31.3571
15.50 * 31 = 480.5
31 multiplied by 7 is 217
122 multiplied by 31 is 3,782.
786 multiplied by 31 = 24,366
123 multiplied by 31 is 3,813.
31 multiplied by 29 is 899.
65 multiplied by 31 is 2,015.
7 x 31
1860
They are: 1*31 = 31 which is a prime number