13 x 23 x 19 x 15 = 85215
If you mean 315 times 23 then it is 945
Exactly 23 times
It is: -15 times -23 = 345
23
143
15 times 7 5 times 23
345 ÷ 15 = 23
180 - (23 x 2 x 3) - 15 = 27
23 times 15 = 120
5 can give into 75 15 times
6 times, remainder 15