PIMSO 2022 - Mathematics - Grade 3 - National Round Question 17

Simplify: $14{,}111+13{,}212+12{,}313+11{,}414+10{,}515+9{,}616+8{,}717+7{,}318+6{,}419+5{,}520+4{,}621+3{,}722+2{,}823+1{,}924$.