def round_to_nearest_500(num):
return round(num / 500) * 500
print(round_to_nearest_500(3))
print(round_to_nearest_500(49))
print(round_to_nearest_500(450))
print(round_to_nearest_500(500))
print(round_to_nearest_500(550))
print(round_to_nearest_500(751))
print(round_to_nearest_500(1300))
print(round_to_nearest_500(-1))
print(round_to_nearest_500(-10))
print(round_to_nearest_500(-700))
'''
run:
0
0
500
500
500
1000
1500
0
0
-500
'''