Below is my code. 

<aura:component >
    <aura:attribute name ="item" type= "Camping_Item__c" required="true"/>
    <p> Name : {!v.Camping_Item__c.Name__C} </p> 
    <P> PRICE :
        <lightning:formattedNumber Value="{!v.Camping_Item__c.Price__C}" style= "currency"/> </P> 
   <p> Quantity :
       <lightning:formattedNumber Value="{!v.Camping_Item__c.Quantity__C}" style= "integer " />   </p>
    <p>Packed : {!v.Camping_Item__c.Packed__C} </p>
    
    <lightning:input type = "toggle"
                     lable="Packed "
                     name="Packed"
                     checked="{!v.camping_item__c.Packed__C}"/>                                          
</aura:component>

I am recieving "We can't find the correct component or value for the Quantity field."  Any help is really appriciated. 

Hi,
I have a requirement I don't know how to get it, Q)ABC containers require the ability to automatically associate a contact created in their salesforce instance with the respective account based on the email domain specified in the primary email address of the contact. The association should happen in real-time as soon as a contact record is created within the system. 1)Develop the necessary piece of apex code to implement a solution 2)necessary test code(with 90% of code coverage)
Thanks in advance,
Rafi