150 ÷ 9 = 16 r 6 → the first natural number between 150 and 300 divisible by 9 is 9 × 17 (=154)
300 ÷ 9 = 33 r 3 → the last natural number between 150 and 300 divisible by 9 is 9 × 33 (=297)
→ there are 33 - 17 + 1 = 17 natural numbers between 150 and 300 divisible by 9.
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There are 43 natural numbers between 200 and 500 that are divisible by seven.
There are 39 natural numbers between 1,000 and 1,500, inclusive, that are divisible by 13.
111 numbers between 5 and 1000 are divisible by 9
between 1 and 600 inclusive there are:300 numbers divisible by 2200 numbers divisible by 3100 numbers divisible by both 2 and 3400 numbers divisible by 2 or 3.
There are 89 numbers between 1 and 180 that are divisible by two.