how to set value on class with jquery

I have below table :

.
.
.

<td >
    <input type="text"   class="car_color"     >
    <input type="hidden" class="number_car" name="my_timelist[times][]" value="0">
</td> 
 
<td >
    <input type="text"   class="car_color"     >
    <input type="hidden" class="number_car" name="my_timelist[times][]" value="0">
</td> 

<td >
    <input type="text"   class="car_color"     >
    <input type="hidden" class="number_car" name="my_timelist[times][]" value="0">
 </td> 
 
.
.
.

I want set value on input with class name class="number_car" by jquery with below code, But this effect on all inputs(have the class name). But I want effect value just on same td.

` $(‘.car_color’).change(function(){

    let datetime    = $(this).val();

   $('.number_car').val( 123456);
}); 

`
How can I fix?