OK, let's crack this. We're given 265 and our task is to multiply it by 25. Essentially, we'll be adding 265 to itself 25 times.
Step 1: 0 + 265 = 265
Step 2: 265 + 265 = 530
Step 3: 530 + 265 = 795
Step 4: 795 + 265 = 1060
Step 5: 1060 + 265 = 1325
Step 6: 1325 + 265 = 1590
Step 7: 1590 + 265 = 1855
Step 8: 1855 + 265 = 2120
Step 9: 2120 + 265 = 2385
Step 10: 2385 + 265 = 2650
Step 11: 2650 + 265 = 2915
Step 12: 2915 + 265 = 3180
Step 13: 3180 + 265 = 3445
Step 14: 3445 + 265 = 3710
Step 15: 3710 + 265 = 3975
Step 16: 3975 + 265 = 4240
Step 17: 4240 + 265 = 4505
Step 18: 4505 + 265 = 4770
Step 19: 4770 + 265 = 5035
Step 20: 5035 + 265 = 5300
Step 21: 5300 + 265 = 5565
Step 22: 5565 + 265 = 5830
Step 23: 5830 + 265 = 6095
Step 24: 6095 + 265 = 6360
Step 25: 6360 + 265 = 6625

So, 265*25 = 6625