If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23.

Find the sum of all the multiples of 3 or 5 below 1000.

```
In [9]:
```sum_of_multiples=0
for i in range (0,1000):
if i%3==0 or i%5==0:
sum_of_multiples = sum_of_multiples + i
print (sum_of_multiples)

```
```

```
In [ ]:
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