Thinking...
I need to calculate the expression: (17 * 23) + (144 / 12) - 89. I should s
show my steps and then give the final answer as "X".
First, I'll handle the multiplication inside the parentheses: 17 times 23.
Let me compute that step by step. 17 * 20 is 340, and since there are three
three more twenties or something? No, better to do it directly.
I know that 17 * 25 would be easy because 25 is 5*5, but here it's 23, so I
I'll stick with basic multiplication.
So, 17 * 23. Let me think: 20 + 3 times something? No.
Standard way: multiply each digit or use distributive property.
17 * 23 = (10*23) + (7*23)
First part: 10 * 23 = 230
Second part: 7 * 23. What's that? 7 * 20 = 140, 7 * 3 = 21, so 140 + 21 = 1
161.
Then add them together: 230 + 161 = ? Let me see, 230 + 160 is 390, plus on
one more is 391. Or directly: 230 + 161, no borrow needed, so it's 391.
I think I recall that 17 * 23 might be a common multiplication or
something, but let me confirm.
Another way: 17 * 23 = 17 * (25 - 2) = (17*25) - (17*2)
17*25 is easy; 20*25=500, minus 3*25? No, that's wrong. 17 is less than 20.
20.
Better: 17 * 25 = 425, because 10*25=250, 7*25=175, 250+175=425.
Then minus (17*2) which is 34? No, I think I confused myself.
I was doing (17*25) - (17*2), but that's for multiplication by difference,
not directly for 23.
No: if I want to multiply by 23,