JS Calculator for smokers

Question

I'm working on a calculator for smokers and I can't figure out why he doesn't want to work. It's so simple and I don't see the mistake.

function spentMonth(){
        let price;
        let num;
        num = Number(document.getElementById('vspent-month').value);
        price = Number(document.getElementById('price').value);
                let sumdays = Number(num) * 365;
        let sum = Number(sumdays*price);
                document.getElementById("rezult1").innerHTML = Number(sum).toFixed(2)+'<span class="dashicons dashicons-money-alt"></span>';
}

<div id="calcolate-cig">
<input placeholder="Years of smoking" id="spent-month" type="number" min="1" max="110" step="1" name="spent_month" value=""> *   
 <input placeholder="Money per day" id="price" type="number" min="0.1" step="0.1" name="spent_month"> = <button onclick="spentMonth()" type="submit" name="submit_1">Result</button>
<span class="rez" id="rezult1"></span>
</div>

Answer 1

Such a simple mistake and I couldn't see it. ID is wrong vspent-month - spent-month.

function spentMonth(){
        let price;
        let num;
        num = Number(document.getElementById('spent-month').value);
        price = Number(document.getElementById('price').value);
                let sumdays = Number(num) * 365;
        let sum = Number(sumdays*price);
                document.getElementById("rezult1").innerHTML = Number(sum).toFixed(2)+'<span class="dashicons dashicons-money-alt"></span>';

}

<div id="calcolate-cig">
<input placeholder="Years of smoking" id="spent-month" type="number" min="1" max="110" step="1" name="spent_month" value=""> *   
 <input placeholder="Money per day" id="price" type="number" min="0.1" step="0.1" name="spent_month"> = <button onclick="spentMonth()" type="submit" name="submit_1">Result</button>
<span class="rez" id="rezult1"></span>
</div>